Online store cost calculator
Describe your catalogue, the way you sell and the systems the store must talk to, and the online store cost calculator splits a custom e-commerce website into modules with hours, a timeline and a price in about 15 seconds.
Sometimes the honest answer is a platform like Shopify — the team review tells you that too. When the way you sell doesn’t fit a template, the contract fixes the price of your own store.
- Time
- About 15 seconds
- You get
- Modules, hours, a timeline and a price
- Cost
- Free and non-binding
- Then
- A team review, the price fixed in the contract
Price drivers
What moves the price of an online store
A custom store is priced by how you sell, not by the number of pages. These six parts decide the number.
Catalogue
A few hundred products with simple variants is the cheap end; thousands of SKUs with attributes and several warehouses is the expensive one.
Data updates
Manual edits in the admin cost little. A two-way sync with accounting or an ERP is a module of its own.
Checkout
One payment provider and one carrier is routine; several providers, invoices and payment on delivery add work.
Accounts
Order history is simple. B2B prices, company accounts and approvals inside the buyer’s company are not.
Extras
Calculators, configurators and consultation flows — the parts that sell like an expert, and the parts templates don’t have.
Languages
One language is the base. Several languages and currencies multiply content, checkout rules and testing.
Orientation
Three routes to an online store
An orientation, not a quote. Compare the routes over three years, not one month: platform plans and paid apps grow with you, a custom store adds modules.
| Route | Upfront cost | Ongoing cost | Fits when |
|---|---|---|---|
| Hosted platform (Shopify or a local SaaS store builder) | From a few hundred to a few thousand dollars for a theme and setup | Monthly plan, paid apps, sometimes a transaction fee | A standard catalogue and checkout, and you want to start this month |
| Open-source platform with a template (WooCommerce, for example) | Roughly $3,000–$15,000 for setup, theme and plugins | Hosting, plugin licences, updates and security patches | A standard store, with more control and your own hosting |
| Custom store | Roughly $15,000–$40,000 for a standard catalogue; $40,000–$100,000+ with calculators, B2B prices and integrations | Hosting and support; no platform fees | The way you sell does not fit a template, or platform costs outgrow the cost of owning |
The calculator prices the custom route for your catalogue and checkout. If a platform fits better, the team review will say so. The article behind these ranges: Online Store Development Cost: What Drives the Price.
Modules
Modules the calculator prices
How a store usually splits into modules. Some belong in the first release; others — like orders sent back to accounting — can come later.
Catalogue and data model
Products, variants and attributes. Everything else depends on it, so it comes first.
Prices and stock
Imported from your accounting system — one direction is often enough for the first release.
Filters and search
By what your buyers actually search for — type, power, brand, use, stock.
Product and category pages
Pages that answer a buyer’s questions before paying, and that rank for them in search.
Cart, payments, delivery
Card payments through WayForPay or Stripe, invoices for companies, delivery options.
Customer accounts
Addresses, order history, repeat orders — and company accounts with their own prices for B2B.
Three formats
Choose how we build it
The format decides who writes the code and how much engineering review goes into it — and with that, the price and the pace.
- AI / build
AI Build
Fastest path · prototypes & internal tools
AI generates the structure and most of the implementation. Engineers review integrations and the release. The lowest cost, for prototypes, internal tools and MVPs that test an idea.
- AI / engOur pick here
AI + DEV
Recommended for most MVPs
AI builds the scaffolding and the obvious parts. Engineers own the architecture, critical logic, integrations and full QA. Balanced pace and review, for customer-facing MVPs and B2B products.
- full / eng
DEV
Maximum quality & control
Senior developers own architecture and implementation end to end. AI is an internal tool for speed, never the final author. For production systems and regulated domains.
A store with a standard catalogue and checkout fits AI + DEV: AI builds the familiar screens, engineers own payments, integrations and SEO. A one-off promo shop can go AI Build. Large catalogues with complex B2B pricing and integrations deserve DEV.
How it works
From a brief to an accepted product
The same five steps for every project, whatever we build. You always know what is agreed, what is paid and what is done.
Estimate
Describe the product in your own words, add a link or a file. In about 15 seconds you see the modules, the hours, the timeline and a price.
Team review
Our team reads the brief and the estimate, asks about anything unclear in your cabinet or on a call, and confirms the scope and the price. Nothing starts before that.
Contract
You sign a contract online: a fixed price, the scope split into modules, and a payment schedule — in full or by stages.
Milestones
We build module by module. QA checks each one before it reaches you, and the cabinet shows the work as it moves.
Acceptance
You have 7 days to review each module: accept it or send it back with a list of fixes. Your money stays in the project reserve until you accept.
FAQ
Questions we get asked
How much does a custom online store cost?
As an orientation: roughly $15,000–$40,000 for a standard catalogue and $40,000–$100,000+ with calculators, B2B prices and integrations. An open-source platform with a template costs roughly $3,000–$15,000 to set up, and a hosted platform less upfront plus monthly fees. The calculator prices your own store.
A custom store or a platform like Shopify?
If a platform covers your catalogue and checkout, start there: it is cheaper. Build your own when the way you sell doesn’t fit a template — expert selection, calculators, B2B prices and accounts, unusual integrations — or when platform fees and paid add-ons start to cost more than owning the store.
Which payment and delivery options can the store have?
Card payments through WayForPay or Stripe, invoices for companies and cash on delivery if your logistics support it; other providers and carriers connect through their APIs. Each one is a line in the estimate.
Can the store sync with our accounting or warehouse?
Yes, if they have an API or an export we can read. Importing prices and stock in one direction is often enough for the first release; sending orders back to accounting can come later, while managers enter them by hand.
What will the store cost after launch?
Payment fees on every card payment, hosting, monitoring and backups, content and SEO, and changes such as new delivery methods or promotions. A custom store has no platform fees. Plan the marketing budget together with the store: over a year it can cost more than the store itself.
Keep reading
The service, the article, the numbers
The article explains what moves the price; the calculator prices your own scope; the service page shows how we build it.
- ServiceE-commerce developmentCustom online stores and B2B e-commerce with catalogues, calculators and accounts that sell like an expert.
- ArticleOnline Store Development Cost: What Drives the PriceOnline store development cost in 2026: orientation prices by route, eight drivers of a custom build, running costs and how not to overpay.
Calculators
Other cost calculators
- MVP cost calculatorThe first version of a product: one core flow, the roles, payments and the admin it needs.
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- Web app cost calculatorClient portals, B2B platforms, SaaS and internal tools, priced by roles, documents and integrations.
- Marketplace cost calculatorTwo-sided platforms, priced by catalogue, orders, payments held until completion, cabinets and the admin.