What does leaving Shopify actually cost?
The data migration is the cheap part. Products, variants, customers and order history export in standard formats, and importers exist for every platform in this list. Budget days rather than weeks for it.
The expensive parts are the theme, the apps and the payment integrations. A Shopify theme does not port; it is rebuilt. Every app in your stack is either replaced by a module, replaced by a built-in feature, or rebuilt as custom code. And the payment and shipping integrations are reconnected on the new platform, which means retesting the entire checkout.
Plan on a rebuild of the front end and the integrations, with the data as a task inside it. Merchants who budget for a data migration and discover the app dependency halfway through are the ones whose projects overrun.
When does the arithmetic favour leaving?
Shopify’s cost has three parts: the plan, the transaction fee where you do not use its own payment product, and the app subscriptions. The first is fixed, the second scales with revenue and the third scales with complexity.
The crossover point is usually driven by the second. A merchant paying a percentage on every order is buying the platform again every year at a higher price, while a self-hosted PrestaShop or a Shopware plan costs roughly the same next year as this year.
As a rough test: add up twelve months of plan, transaction fees and app subscriptions, then compare against hosting plus a commercial edition plus the one-off rebuild. If the rebuild pays back inside eighteen months, the case is usually sound.
Do you lose anything by leaving?
Yes, and it is worth being honest about it. Shopify’s app ecosystem is larger than any European platform’s, its hosting is genuinely somebody else’s problem, and the number of agencies who can pick up a Shopify store is far higher.
What you gain is the checkout, the cost structure and the jurisdiction. Whether that trade is worth it depends on volume and on how much of your stack is app-dependent — which is why the honest first step is auditing your installed apps rather than comparing feature pages.
Which European platform is the closest match?
Shopware, for most merchants. It is the only one here that offers the combination a Shopify merchant is used to — a maintained product, commercial support, a marketplace of extensions, hosted if you want it — without the revenue share.
PrestaShop is closest on cost and control but moves hosting and updates to you. Saleor is closest if you were already headless. Odoo is closest if your real problem was reconciliation. Spryker and Sylius are for merchants whose requirements outgrew the category.