What determines the price of an online store?
An online store in 2026 can cost anywhere from a modest sum for a simple store on an off-the-shelf platform to a much larger investment for a custom e-commerce build with deep integrations. The gap between the two is significant, so in this article we explain what actually drives the cost and what to expect from a quoting conversation, so you don’t overpay or end up with a store that outgrows itself in a year.
Why store prices vary so widely
„Online store” covers very different projects, so a generic price range from the internet says little about your specific case. A simple store on a ready-made platform, with a standard theme, a modest catalog, and basic payments and shipping, is a very different scope of work from a mid-size store with custom UX/UI and integrations, and different again from a fully custom e-commerce platform with ERP/WMS integrations, multi-language support, and unique sales features.
The final number always depends on the specific scope, which is why we price every project individually based on real business goals, rather than fitting it into a generic package.
What actually drives the price up?
Catalog size and complexity
A store with a simple catalog of a few dozen items is a different scope of work than a platform with thousands of product variants, filters and configurators. The larger and more complex the catalog, and the more attributes each product has (size, color, variant, bundle), the more work goes into designing the data structure and interface correctly.
Integrations with other systems
A store rarely operates in isolation from the rest of the business. Integrations with inventory systems, payment gateways, couriers, accounting software, or marketing tools add real scope, and real cost, to a project. Every integration means additional time spent on testing and keeping things working through future updates.
UX/UI design
An off-the-shelf theme is cheaper upfront, but a custom interface design translates directly into conversion rate and shopping experience. A well-designed checkout flow can meaningfully increase sales without increasing ad spend, an investment that pays for itself faster than most businesses assume going in.
The technology you choose
WooCommerce, PrestaShop, Shopify, or a fully custom build, each comes with different licensing costs, different maintenance costs and different limitations. We cover this in more depth in our article on WooCommerce vs PrestaShop vs Shopify.
Off-the-shelf platform or custom build?
For smaller stores, ready-made platforms are often a good starting point, a lower cost of entry and faster launch let you validate a business idea sooner. Once a store grows and unusual sales requirements appear, tiered discounts for B2B customers, complex shipping rules, or integration with an in-house inventory system, off-the-shelf tools start to hold growth back. That’s when it’s worth considering an online store development project built around your actual workflow, instead of bending a template to fit needs it wasn’t designed for.
How we approach pricing
As an interactive agency and software house, we price every project individually after a short conversation about your business, goals and budget. We ask how many products you plan to sell, whether you already have a platform in mind, and what integrations you’ll need. From there we put together a concrete quote and timeline, and we reply within 24 hours.
Bottom line: the cost of an online store depends heavily on your catalog size, chosen platform, and integrations, so there is no single honest number we can give you here. Get a free quote for your project and find out exactly what your store will cost.