Total cost of ownership
Winner: Tie / DependsShopify’s monthly fee is higher, but it bundles hosting, security patches, performance and platform upgrades. You’ll pay $29–$2,000+/month plus transaction fees if you don’t use Shopify Payments, plus app subscriptions.
Magento’s licence is zero (Open Source) or six-figure annual (Adobe Commerce). Hosting and engineering staff are the real spend — a serious Magento Open Source operation needs at least one senior PHP dev plus DevOps. Total cost frequently exceeds Shopify Plus once you account for people.
WooCommerce is cheapest at small scale — a $50/month VPS, a developer for a few hours a month — but the math flips around 30,000 monthly orders, where hosting and plugin licences add up.