Guru Connector vs. Astronaut ‑ Digital downloads: An In-Depth Comparison

Table of Contents

1. Introduction
2. Guru Connector vs. Astronaut ‑ Digital downloads: At a Glance
3. How to Read This Comparison
4. Feature Comparison
5. Pricing & Value
6. Integrations and Technical Considerations
7. Merchant Experience: Admin, Students, and Support
8. Security, Compliance, and Reliability
9. Common Merchant Use Cases & Recommendations
10. Merchant Pros and Cons Summary
11. The Alternative: Unifying Commerce, Content, and Community Natively
12. Migration Considerations
13. Practical Decision Guide
14. Support & Vendor Reliability
15. Conclusion
16. FAQ

Introduction

Shopify merchants adding digital products, courses, or memberships face a fundamental choice: stitch together single-purpose tools and external platforms, or keep everything inside the store for a unified customer experience. That decision affects checkout friction, upsells, customer retention, and long-term operational costs.

Short answer: Guru Connector is aimed at merchants that already use the Noggin Guru LMS and need a way to sell courses from Shopify that link out to a full-featured external learning system. Astronaut ‑ Digital downloads is a straightforward, file-delivery solution for stores that sell ebooks, audio, video, or other downloadable assets and need a simple way to deliver files after purchase. Merchants who want to keep customers on-site, bundle physical and digital goods, and build memberships and communities natively on Shopify should evaluate a purpose-built native solution like Tevello as an alternative.

This article provides a feature-by-feature, impartial comparison of Guru Connector and Astronaut ‑ Digital downloads so merchants can decide which app best fits their needs. The comparison covers core functionality, pricing and value, integrations, security, merchant experience, support, common use cases, and the practical trade-offs of each approach. After the direct comparison, the post outlines why a native, all-in-one platform can be advantageous and introduces Tevello as a unified alternative, supported with merchant success stories.

Guru Connector vs. Astronaut ‑ Digital downloads: At a Glance

How to Read This Comparison

This analysis assumes merchants want clarity on practical outcomes: reduce customer friction, increase lifetime value (LTV), and create new revenue channels by selling digital education or downloadable products. The next sections explore features, pricing, technical integration, merchant operations, and strategic trade-offs. Each section separates objective facts from strategic interpretation, and ends with pros and cons for quick reference.

Feature Comparison

Core Purpose and Product Positioning

Guru Connector: External LMS Connector

Guru Connector is built to integrate Shopify storefront purchases with the Noggin Guru LMS. Its purpose is to map Shopify products to Learning Roles in Noggin Guru so that when a customer buys a product, they receive a link to the LMS where content is hosted and training records are maintained. This makes it suitable for organizations that already run courses inside Noggin Guru and want a Shopify checkout path to sell access.

Key points:

• Connects specific Shopify products to designated learning roles.
• Delivers access via links in the storefront and post-purchase emails.
• Keeps training records in the external LMS rather than inside Shopify.

Pros:

• Leverages an LMS built for enterprise-grade course management and reporting.
• Preserves learning records and compliance data in a central LMS.

Cons:

• Requires navigating off-site for course consumption (customer leaves Shopify).
• Additional cost and complexity from running a separate LMS.
• App listing provides no visible reviews or clear pricing on the Shopify App Store.

Astronaut ‑ Digital downloads: File Delivery System

Astronaut is positioned as a general-purpose digital delivery tool for files: ebooks, audio, video, source code, images, and other downloadable content. The app focuses on secure file attachment and delivery after payment, with emphasis on easy setup and configurable bandwidth/storage tiers.

Key points:

• Offers tiered plans with defined file storage and monthly bandwidth allowances.
• Allows customization of download pages and email templates.
• Emphasizes security and performance for file downloads.

Pros:

• Fast setup for stores selling standalone digital goods.
• Predictable monthly tiers aligned with expected file volume.
• On-site delivery — customers download files from the merchant’s store environment.

Cons:

• Not a course platform — lacks features like drip, memberships, community discussions, certificates, or native course content management.
• Bandwidth overage costs can add up if campaigning drives traffic spikes.
• Limited public feedback on the app (no reviews on the Shopify App Store page).

Content & Course Features

Course-Oriented Features (Drip, Quizzes, Certificates)

• Guru Connector: It does not provide course authoring capabilities inside Shopify; instead, those features are expected to live within the Noggin Guru LMS. If a merchant requires graded quizzes, certificates, content drip schedules, or advanced learning flows, Noggin Guru may provide those, but the Shopify app's role is only to grant access based on product purchase.
• Astronaut: Not designed for course functionality. It delivers files immediately after purchase. There is no native concept of drip schedules, lesson sequencing, member-only content, or assessments.

Practical implication:

• Merchants planning to sell structured courses with engagement features should plan for an LMS (external with Guru Connector) or a course platform with native Shopify integration. Astronaut is suitable for single downloads, not for structured learning experiences.

Memberships, Communities, and Interaction

• Guru Connector: Community and interactive features depend entirely on Noggin Guru’s capabilities. The Shopify app doesn’t provide community discussion boards, membership feeds, or social features on the storefront.
• Astronaut: No membership or community layer. It’s a transactional file-delivery tool.

Practical implication:

• For merchant goals like building a member community or increasing retention through ongoing interactions, neither app provides a native community experience in Shopify. That gap often pushes merchants toward external community platforms or a native multi-feature app.

Bundling and Commerce Flexibility

Bundling Physical and Digital Products

• Guru Connector: Allows linking products to LMS access, which can enable manual bundling (e.g., buy a physical kit and receive a course). However, because final delivery and learning occur off-site, the cross-sell/upsell experience can feel split.
• Astronaut: Supports attaching download files to products. This makes it straightforward to bundle a physical product with an immediate digital download (e.g., a pattern PDF with a sewing kit), maintaining a single checkout flow within Shopify.

Practical implication:

• Astronaut has an advantage for immediate file bundling while keeping the delivery on the merchant’s domain. Yet it lacks lifecycle and membership features for longer-term customer engagement.

Checkout & Payment Integration

Shopify Native Checkout Experience

• Guru Connector: The sale occurs through Shopify checkout, but access is provided via a redirect/link to Noggin Guru—so customers are taken outside the store for the learning experience.
• Astronaut: Works within Shopify to deliver downloads post-purchase; customers remain "at home" for the transaction and delivery.

Merchant impact:

• Keeping customers inside Shopify typically reduces friction for future purchases, retention emails, and conversion rate optimization. Redirects to external platforms complicate analytics, cross-sell flows, and potentially harm conversion continuity.

Security and Access Control

File Security and Access Tokens

• Guru Connector: Security and access control are managed by Noggin Guru’s LMS. That may include user authentication, role-based access, and training record logging, which can be robust for corporate learning uses.
• Astronaut: Uses link-based download delivery with security settings and bandwidth controls. It includes options to limit downloads and guard file access, but it is not an LMS-level system for tracking learning outcomes.

Merchant perspective:

• For compliance-heavy training where tracking and records are required, an LMS is preferable. For standalone digital products where security and controlled download are the priority, Astronaut is sufficient and simpler.

Pricing & Value

Astronaut ‑ Digital downloads Pricing Model

Astronaut’s pricing is transparent in the listing:

• Free plan: 50 MB storage, 10 GB bandwidth per month.
• Basic ($9.99/month): 10 GB storage, 20 GB bandwidth, $1/GB over limit.
• Gold ($25.99/month): 50 GB storage, 70 GB bandwidth, $0.75/GB over limit.
• Diamon ($59.99/month): 250 GB storage, 500 GB bandwidth, $0.50/GB over limit.

Value assessment:

• Astronaut’s tiered model suits stores with predictable file sizes and traffic. The free tier is useful for development or very low-volume sellers. Merchants with heavy downloads or viral campaigns should model bandwidth usage carefully to avoid overage charges. This provides predictability, but cost can escalate with unexpected spikes.

Guru Connector Pricing Model

The app listing does not provide explicit pricing tiers. Pricing is typically determined by the Noggin Guru LMS subscription, which may include license fees per learner, per organization, or tiered plans. Because the Shopify app primarily maps purchases to LMS access, merchants must evaluate total cost across both platforms.

Value assessment:

• Using an LMS offers powerful capabilities but incurs additional cost and operational overhead. For merchants who need enterprise LMS features and compliance tracking, the combined cost may be justified. For small- to medium-sized merchants who simply want to sell courses, the combined cost can reduce ROI unless many features are required and utilized.

Comparing Value for Typical Merchants

• Simple digital sellers (ebooks, audio, single-file downloads): Astronaut offers direct cost-to-value alignment, predictable tiers, and quick setup.
• Merchants who need advanced course features (learning paths, tracking, certifications): Guru Connector plus Noggin Guru provides enterprise-level functionality but requires acceptance of higher complexity and cost.
• Merchants that aim to grow LTV by bundling physical products with courses and retention-driven communities: A single, native solution that combines commerce, courses, and communities typically offers better value because it reduces platform fragmentation and associated churn. Tevello’s pricing model (an unlimited plan at $29/month and a free trial) is oriented toward predictable value for merchants who need unlimited courses and members without per-member fees. For detail on plans, merchants can review a simple, all-in-one price for unlimited courses (see Tevello pricing).

Integrations and Technical Considerations

Third-Party Integrations

Guru Connector Integrations

• Main integration: Noggin Guru LMS. The app requires a functioning Noggin Guru account and expects the LMS to be the source of course materials and learning management.
• Because access is managed by the LMS, integrations with CRM, analytics, or marketing systems might require configuring both Shopify and Noggin Guru.

Astronaut Integrations

• Focuses on integrating with Shopify to serve files. Does not advertise broader third-party integrations (such as with subscription engines, email course drip systems, or membership tools).
• For subscriptions, merchants may combine Astronaut with subscription apps (e.g., Appstle Subscriptions), but experience consistency is governed by how these apps interoperate.

Technical Complexity and Implementation

Setup Speed

• Astronaut: Low implementation overhead—upload files, attach to products, configure download settings. It is a practical option for merchants who need quick delivery of digital assets.
• Guru Connector: Requires coordination with Noggin Guru. Setup speed depends on existing LMS configuration. If an organization already uses Noggin Guru, setup can be straightforward; if not, onboarding and course authoring is an added project.

Maintenance and Technical Debt

• Astronaut: Ongoing maintenance is low; primary concerns are file management and bandwidth planning.
• Guru Connector: More technical upkeep because courses, enrollment, and access management live in the LMS. Updating course content, syncing user records, and managing single sign-on or account mapping requires ongoing attention.

Analytics and Tracking

• Guru Connector: Training records and detailed learner analytics are stored in the LMS, enabling rich reporting; however, merchant-level e-commerce analytics (Shopify) and LMS analytics may not be seamlessly unified.
• Astronaut: Ecommerce metrics stay within Shopify, making sales analytics straightforward but learning outcome metrics non-existent.

Merchant takeaway:

• The choice hinges on whether the priority is enterprise learning analytics (pick an LMS + Guru Connector) or ecommerce simplicity (Astronaut). For merchants wanting both ecommerce conversion optimization and course analytics in one place, native integration matters.

Merchant Experience: Admin, Students, and Support

Admin Experience

Product Management

• Astronaut: Product-to-download mapping is managed within Shopify and the app. Uploading multiple file versions and replacing files is simple.
• Guru Connector: Product-to-LMS mapping requires administrators to manage assignments of Learning Roles within Noggin Guru. Admins may need to coordinate between Shopify and their LMS admin console.

Customer Service and Support Load

• Astronaut: Support is typically straightforward — failed downloads, bandwidth issues, or transactional problems. Resolution often lies within Shopify or the app.
• Guru Connector: Potential for increased support contacts due to account/login issues, lost LMS access links, or LMS-specific problems, particularly if customers are unfamiliar with being redirected to an external platform.

Real-world evidence:

• Merchants who consolidate their course and commerce experience natively often report fewer access issues and lower support volume. For example, a migration to a native Shopify courses platform led to a significant reduction in support tickets and smoother member management (migrated over 14,000 members and reduced support tickets).

Learner/Customer Experience

Single Sign-On, Account Linking, and Friction

• Guru Connector: Requires end-users to follow a link to Noggin Guru post-purchase. If single sign-on is not configured between Shopify and the LMS, customers may need to create or link accounts, which introduces friction.
• Astronaut: Keeps delivery inside Shopify, typically involving no additional login steps beyond Shopify customer accounts. This reduces friction and preserves the storefront relationship.

User-centric note:

• Friction at access time directly impacts customer satisfaction and repeat purchase likelihood. Merchants optimizing retention and average order value (AOV) prefer experiences where customers stay within the store.

Security, Compliance, and Reliability

Data Ownership and Compliance

• Guru Connector: Sensitive learning records and user activity may be stored in Noggin Guru. Merchants must evaluate data residency, GDPR compliance, and vendor contracts for an external LMS.
• Astronaut: Data remains within the merchant’s Shopify ecosystem and the app’s storage; merchants should confirm storage location and compliance practices, especially for EU customers.

Reliability and Bandwidth Management

• Astronaut: Explicitly manages bandwidth with caps and overage pricing. High-download scenarios can be planned for with higher-tier plans to avoid outages or throttling.
• Guru Connector: Course streaming or downloads from the LMS depend on Noggin Guru’s infrastructure and any CDN they use. Merchants should verify performance SLAs for media-heavy courses.

Common Merchant Use Cases & Recommendations

Use Case: A Brand Selling Pattern PDFs and Video Tutorials Alongside Physical Kits

• Best match: Astronaut for direct file delivery attached to product purchases. It keeps customers on-site and supports bundling.
• Caveat: If the brand wants to build a structured curriculum with drip lessons and member forums, Astronaut alone won’t suffice; either combine with an external membership platform or choose a native course-and-community platform.

Use Case: A Training Organization That Requires Certification and Enterprise Reporting

• Best match: Guru Connector paired with Noggin Guru LMS. The merchant benefits from an LMS built for structured training, audit trails, and certification workflows.
• Caveat: Customers are redirected off the store for learning; merchants must accept split analytics and more complex support flows.

Use Case: A D2C Brand That Wants to Increase LTV by Bundling Courses with Physical Products and Building Community

• Best match: Neither Guru Connector nor Astronaut fully covers this need in a single native package. Astronaut handles bundling but not membership/community. Guru Connector handles course management but externalizes the learning experience.
• Recommendation: Consider a native Shopify solution that unifies commerce, courses, and community to reduce friction and increase repeat purchases. Tevello is built for that specific intersection — enabling bundling and community in Shopify with native checkout and membership features. See how one merchant increased digital and physical revenue by keeping everything on Shopify (how one brand sold $112K+ by bundling courses with physical products).

Merchant Pros and Cons Summary

Guru Connector — Pros

• Connects Shopify sales to a full-featured LMS suited for enterprise use.
• Centralized learning records and advanced course management when Noggin Guru is required.

Guru Connector — Cons

• Off-site learning experience fragments the customer journey.
• Opaque pricing from the LMS and no visible reviews on the Shopify listing.
• Extra complexity in account and data management.

Astronaut ‑ Digital downloads — Pros

• Simple setup for selling and delivering files immediately after purchase.
• Clear tiered pricing for storage and bandwidth; free tier for small sellers.
• Keeps customers in Shopify for downloads and post-purchase flows.

Astronaut ‑ Digital downloads — Cons

• Not designed for structured courses, member communities, or drip content.
• Overage bandwidth can become costly if downloads spike.
• Limited public feedback and reviews on the app listing.

The Alternative: Unifying Commerce, Content, and Community Natively

The Problem of Platform Fragmentation

Platform fragmentation happens when a merchant uses a payment and storefront system on Shopify but relies on separate platforms for content, courses, community, or membership management. Fragmentation creates predictable operational challenges:

• Customers leave the store to access content, increasing drop-off and support requests.
• Analytics are split across platforms, making conversion optimization and attribution harder.
• Bundles, upsells, and post-purchase journeys break down when users are redirected to third-party domains.
• Pricing unpredictability arises from per-user or per-member fees across multiple vendors.

These issues are common for brands that begin with a dedicated LMS or a third-party community tool and then try to stitch commerce back into Shopify. The practical costs of fragmentation include lost revenue, additional support overhead, and slower growth.

Why Native Integration Matters

A native solution consolidates content, community, and commerce where the customer already expects it: the brand’s Shopify store. Benefits include:

• Unified checkout and account experience, which reduces friction and increases conversion.
• Easier bundling of physical and digital products, improving average order value and LTV.
• Simplified analytics through single-source data, enabling faster iteration on marketing and product funnels.
• Lower support volume because access and purchases remain within one ecosystem.

There is empirical evidence showing the impact of native consolidation. For example, brands that moved from fragmented setups to a native Shopify courses and community solution reported substantial gains: one brand sold over 4,000 courses and generated $112K+ in digital revenue by consolidating course delivery and product bundles on Shopify (how one brand sold $112K+ by bundling courses with physical products). Another merchant generated over €243,000 by using a native platform to upsell courses and leverage repeat buyers (generated over €243,000 by upselling existing customers). Large-scale migrations show operational benefits too: a move to a native platform migrated over 14,000 members and reduced support tickets significantly (migrated over 14,000 members and reduced support tickets).

Introducing Tevello: A Native, All-in-One Platform

Tevello is a Shopify-native courses and communities platform designed to keep customers "at home" on the storefront while enabling merchants to sell courses, digital products, and memberships. Key aspects of Tevello’s approach:

• Native Shopify integration that leverages Shopify checkout and customer accounts for a seamless sales and learning experience.
• Built-in features for memberships, drip content, certificates, quizzes, bundles, and course videos.
• Designed to increase LTV by allowing merchants to natively bundle physical and digital products.
• Predictable pricing with an Unlimited Plan that includes all core course and community features, which is positioned as better value for merchants who expect to scale content offerings without per-member fees.

Practical features merchants value:

• Membership tiers and recurring billing integration with popular subscription apps.
• Bundles that combine physical kits and digital courses in one transaction.
• Community features that foster peer interaction and repeat purchases.

Explore all the key features for courses and communities to evaluate fit (all the key features for courses and communities).

How Tevello Delivers Business Outcomes

Consolidating commerce and content natively on Shopify with Tevello has demonstrable results for merchants focused on growth and retention:

• Crochetmilie consolidated courses and physical products on Shopify and sold over 4,000 digital courses, generating $112K+ in digital revenue and over $116K+ in physical product revenue by bundling offerings and streamlining the customer journey (how one brand sold $112K+ by bundling courses with physical products).
• Fotopro used native upsell flows to generate over €243,000 from course sales and benefited from over 50% repeat purchase behavior among customers who upsold via the platform (generated over €243,000 by upselling existing customers).
• A migration off a fragmented custom stack resulted in moving 14,000+ members into a consolidated Shopify flow and reduced support tickets dramatically, improving both customer experience and operational efficiency (migrated over 14,000 members and reduced support tickets).
• Brands that leveraged native membership and product bundling saw improvements in returning customer rate and average order values. One merchant achieved a 59%+ returning customer rate after shifting to native bundles and memberships (achieved a 59%+ returning customer rate).

These examples illustrate a recurring theme: reducing platform handoffs increases revenue and reduces support friction.

Comparing Value and Pricing Predictability

Tevello’s pricing model is designed for predictability and scalability. Merchants can assess the value of an all-in-one native platform without worrying about per-member or per-course fees. For merchants interested in cost predictability and unlimited content options, Tevello’s approach offers a straightforward cost structure with an Unlimited Plan and a trial to evaluate fit quickly. For merchants curious about pricing, review a simple, all-in-one price for unlimited courses (see Tevello pricing).

Try It in Your Store

Merchants who want to test a native Shopify approach can install the app directly from the Shopify App Store where it highlights how Tevello is natively integrated with Shopify checkout and core store features (natively integrated with Shopify checkout). The app listing shows the native integration benefits and links to additional details. For merchants comparing native vs. external approaches, hands-on testing often clarifies which path reduces friction and increases conversion.

Migration Considerations

Moving from Guru Connector + Noggin Guru to a Native Platform

• Data migration: Export learner lists, course completion records, and user metadata from Noggin Guru. Plan for student account creation or mapping in Shopify if preserving learner history is critical.
• Content migration: Video assets, PDFs, and course modules need to be moved to the new platform or hosted on a CDN and embedded.
• Communication: Inform learners about access changes well before migration to reduce support load.

A documented migration example shows that moving a large community onto Shopify can be done successfully and can lower support tickets and increase member engagement (migrated over 14,000 members and reduced support tickets).

Moving from Astronaut to a Native Course Platform

• If courses evolve beyond downloadable files into sequenced lessons and community-based learning, migration involves re-structuring files into course modules and configuring drip schedules and membership rules.
• For merchants who previously used Astronaut for downloads attached to products, bundling and manifesting the same downloads inside a native learning environment can preserve the seller experience while enabling long-term engagement.

Practical Decision Guide

Use the following criteria to guide selection:

• If the merchant already uses Noggin Guru LMS for enterprise training and needs to sell access via Shopify while preserving LMS reporting, choose Guru Connector.
• If the merchant’s primary need is immediate file delivery for downloads and predictable monthly storage/bandwidth, choose Astronaut ‑ Digital downloads.
• If the merchant’s goals include bundling products with courses, building a member community, reducing support, increasing LTV, and keeping customers on-site, evaluate a native platform like Tevello. Learn from merchants that consolidated onto Shopify to grow revenues and repeat purchases (see how merchants are earning six figures).

Support & Vendor Reliability

Public Feedback and Transparency

• Guru Connector: No reviews or ratings visible on the Shopify App Store listing, limiting signals about install experience and support responsiveness.
• Astronaut: Also shows no reviews on the Shopify App Store listing. Pricing transparency exists, but public feedback is minimal.

Vendor assessment:

• When reviews are limited, merchants should request demos, trial periods, or references and validate SLAs, especially for mission-critical training or high-download products.

Developer Responsiveness and Roadmap

• Astronaut’s transparent tiers suggest a stable product focus on file delivery.
• Guru Connector’s value depends heavily on Noggin Guru’s roadmap and support model; merchants should evaluate the LMS vendor directly for support SLAs.

Conclusion

For merchants choosing between Guru Connector and Astronaut ‑ Digital downloads, the decision comes down to purpose and priorities. Guru Connector is the right choice when a merchant already relies on the Noggin Guru LMS and needs to sell access to that external learning environment from Shopify. Astronaut ‑ Digital downloads is the better match for stores that sell standalone digital files and want a simple, predictable file-delivery tool with tiered storage and bandwidth.

However, for merchants who need a single platform that unifies courses, digital products, memberships, and community while keeping customers inside the Shopify storefront, a native solution provides stronger long-term value. Consolidating these functions reduces friction at checkout and access time, simplifies analytics and support, and enables more effective bundling and upsells. Tevello is designed as that native alternative: it combines commerce and content, and merchants have used it to scale revenue and improve customer experience — for example, generating over $112K in digital revenue by bundling courses with physical products (how one brand sold $112K+ by bundling courses with physical products), generating over €243,000 by upselling existing customers (generated over €243,000 by upselling existing customers), and migrating 14,000+ members while reducing support tickets (migrated over 14,000 members and reduced support tickets). Merchants evaluating the native option can compare features and plans, and see why consolidating content and commerce is effective for growth (all the key features for courses and communities).

Start your 14-day free trial to unify your content and commerce today: Start a 14-day trial and explore pricing.

For quick access to the native app listing and to inspect how Tevello integrates with Shopify checkout and core store features, see the Shopify App Store listing (natively integrated with Shopify checkout).

FAQ

How do Guru Connector and Astronaut differ in handling course content?

Guru Connector is an integration layer that maps Shopify purchases to roles in the Noggin Guru LMS, so course content and learner tracking live in the LMS. Astronaut delivers downloadable files directly after purchase and does not provide structured course features like lessons, drip content, or certificates. For structured courses, an LMS or a course platform is required.

Which app keeps customers "at home" on the Shopify storefront?

Astronaut keeps customers within the Shopify storefront for download delivery. Guru Connector redirects learners to an external LMS (Noggin Guru) for course access. Keeping customers on-site generally reduces friction and supports better cross-sell and retention strategies.

If a merchant wants memberships, community discussion, and course drip features, which option is best?

Neither Guru Connector nor Astronaut fully delivers native community and drip features on Shopify. Guru Connector relies on Noggin Guru for learning functionality and would require additional tools for community. Astronaut lacks those features entirely. A native course-and-community platform on Shopify is the better choice for integrated memberships, drip, and community experiences.

How does a native, all-in-one platform like Tevello compare to specialized or external apps?

A native platform reduces platform fragmentation by hosting commerce, courses, and community in one place. That leads to a smoother customer experience, consolidated analytics, easier bundling of physical and digital goods, and often lower support overhead. Case studies show merchants achieving significant revenue and operational benefits after consolidating natively (see how merchants are earning six figures). For pricing clarity and an accessible trial, review Tevello’s plans to test whether the native trade-offs align with the merchant’s goals (see Tevello pricing).