E-commerce Platforms Compared on Total Cost
E-commerce platforms are compared on monthly subscription, which is frequently the smallest component of what a store actually costs to run.
The components
Subscription is the visible cost and the easiest to compare.
Transaction fees are charged by some platforms on top of payment processing, often waived if you use the platform's own payment provider. This creates a real cost to using an alternative processor even when its rates are better.
Payment processing is charged separately by whoever handles the cards.
Apps and extensions add up quickly. A store needing reviews, email marketing, subscriptions, advanced shipping rules and inventory sync can easily spend more monthly on apps than on the platform.
Themes, whether purchased or custom-built, and development time for anything beyond configuration.
Hosted versus self-hosted
Hosted platforms handle hosting, security, updates and compliance. You trade flexibility and pay a subscription, and the platform's limits become your limits.
Self-hosted options give full control and require you to manage hosting, security, updates and backups — either with internal capability or a maintenance retainer. The software may be free; running it competently is not.
For most small merchants the hosted route costs less in total once maintenance is honestly counted.
Where platforms differ that matters
Product variant limits. Stores with many size and colour combinations hit ceilings on some platforms.
Multi-currency and multi-language support, which is frequently an add-on rather than standard.
Tax handling across jurisdictions, which is a genuine problem for cross-border selling and where platform capability varies considerably.
Checkout customisation, which some platforms restrict heavily and which affects conversion.
B2B features — customer-specific pricing, quotes, purchase orders — which are absent from most standard plans.
Migration cost
Moving between platforms is expensive and disruptive: products, customers, order history, URLs and SEO all need handling.
URL structure changes without proper redirects lose search visibility, and recovery takes months. This is the most commonly underestimated migration cost.
Choosing with two or three years of growth in mind is cheaper than migrating in year two.
Running the comparison properly
Model your actual expected volume and average order value. Calculate subscription plus transaction fees plus processing on that volume, then add the apps you know you need.
Compare that annual total, not the monthly headline. The ranking frequently changes once transaction fees are included, particularly at higher volumes where a slightly more expensive plan with no transaction fee wins comfortably.
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