MedusaJS or Shopify Plus - what is cheaper over 3 years?

MedusaJS and Shopify Plus do not solve the same problem in the same way. Shopify Plus sells a hosted commerce system with a large app ecosystem. MedusaJS v2 gives you a modular open-source engine that must be implemented, operated and integrated, but after launch it is owned by you and does not impose a GMV take-rate.

So “which is cheaper?” is too shallow. In year one, Shopify Plus often wins on speed, especially for simple D2C, standard payments and a limited integration map. Over 3 years, Medusa starts to make sense when the cost of apps, B2B workarounds, checkout limits and platform fees grows faster than the cost of an owned run team.

For CFOs and CTOs the real comparison is not the monthly invoice but the cost of change. If every non-standard commercial rule needs another app, a vendor roadmap request or middleware workaround, SaaS TCO grows quietly. If you do not have a team or partner to operate open-source commerce, Medusa can look cheaper on paper and cost more in practice.

Most comparisons compare feature lists: checkout, CMS, apps, B2B, headless API, hosting. That helps shortlisting, but it does not answer the CFO question: when does the platform stop being a subscription cost and become an operating-constraint cost?

Shopify Plus now lists plans from GBP 1,800/month on a 3-year term or GBP 1,950/month on a 1-year term, with a variable platform fee possible for more complex businesses. That honestly positions Plus as an enterprise product, not a cheap plan for a small store.

Medusa communicates a different economy: no GMV platform fee, unlimited orders and products, and source-code control. That advantage becomes real only when you have processes worth owning in architecture: ERP, contract pricing, B2B channels, a mobile app, marketplace flows or a custom OMS.

Choose Shopify Plus when you want a fast D2C launch, have a standard catalogue, simple checkout, few integrations and accept the marketplace apps model. It is a reasonable choice when the business is still validating the channel or does not want to operate its own commerce backend.

Choose MedusaJS v2 when commerce is part of operational advantage: contract pricing, credit limits, split checkout, custom OMS, React Native app, B2B portal, ERP and PIM integration. In that scenario you are not buying “a shop”; you are building a transaction layer for your own processes.

GMI portfolio example: the SFD React Native app passed 100,000 downloads, keeps a 4.9 App Store rating and earned a Mobile Trends Awards 2025 Commerce nomination. The TCO lesson is simple: resilient APIs, clear data ownership and architecture for campaign peaks are costs to plan before launch, not rescue after an outage.

The first hidden cost is integration. ERP rarely behaves like a clean demo API: it has delays, limits, bad data, manual stock corrections and accounting exceptions. On Shopify Plus many teams end up with middleware beside the platform. On Medusa integration is part of the architecture, but it must be designed well from the start.

The second cost is business-model change. D2C may start with one checkout, but a year later the team adds B2B, marketplace, subscriptions, retail-store sales or a mobile app. SaaS is fast while you fit its model. Open-source starts slower, but usually handles non-standard rules better.

The third cost is competence. Shopify Plus moves part of the responsibility to the platform, but creates dependency on the ecosystem. Medusa gives code ownership, but needs a partner or team that understands Node.js, TypeScript, security, observability and release management. A TCO model without that line is dishonest.