Ecommerce website development typically costs $5,000-$12,000 for a simple catalog store, $12,000-$35,000 for a mid-size store with moderate customization, and $35,000 or more for custom or deeply integrated builds — with the specific tier determined largely by catalog size, integration complexity, and how much custom design and functionality the store needs beyond standard platform features.
Tier 1: Simple Catalog Store ($5,000-$12,000)
This tier typically covers stores with under 100-200 products, a standard platform (Shopify or WooCommerce) with a customized theme rather than fully custom design, standard payment gateway integration, and minimal third-party integrations beyond what the platform supports natively. This is the right tier for most new ecommerce businesses validating a product line without unusual technical requirements.
Tier 2: Mid-Size Store ($12,000-$35,000)
This tier covers larger or more complex catalogs (roughly 200-2,000 products), custom design work beyond theme customization, a handful of third-party integrations (email marketing platforms, review systems, shipping calculators), and potentially some custom functionality that goes beyond what standard apps or plugins provide. Most established small-to-mid-size businesses moving online, or growing beyond an initial simple store, land in this range.
Tier 3: Custom or Deeply Integrated Build ($35,000+)
This tier covers stores requiring genuinely custom development — complex configurators, deep ERP or inventory system integration, headless commerce architecture, multi-currency and multi-region support with localized pricing, or B2B-specific features like tiered pricing and net-terms checkout at scale. Large catalogs (2,000+ SKUs) with complex attribute structures also commonly push into this tier, even without other custom requirements, simply due to the data architecture and performance engineering involved.
What Increases Cost the Most Within Any Tier?
A few factors consistently push cost toward the higher end of whatever tier a project falls into: the number of third-party integrations required, how much custom (versus theme-based) design work is involved, catalog complexity (not just size, but how many distinct attributes and variants each product has), and any requirement for multi-currency, multi-language, or multi-region support, which adds real complexity across nearly every part of the build.
Are There Ongoing Costs After Launch?
Yes, and these should be budgeted separately from the initial build cost. Ongoing costs typically include platform subscription fees (for Shopify) or hosting costs (for self-hosted platforms like WooCommerce or Magento), payment processing fees (a percentage of each transaction, standard across virtually all platforms), app or plugin subscription costs for any ongoing tools used, and periodic maintenance or feature updates as the business's needs evolve. These recurring costs are easy to underestimate when budgeting only for the initial build.
Is a Custom Build Always More Expensive Than Using a Platform?
Upfront, yes, meaningfully so. But the calculus can shift over a longer time horizon for stores with genuine platform-limiting requirements — the ongoing cost of working around a platform's limitations (lost sales from checkout friction a platform won't let you fix, for example) can, in specific cases, exceed the higher upfront cost of a custom build designed around the business's actual needs from the start. This isn't the case for most stores, but it's worth evaluating honestly rather than assuming platform-based development is always the cheaper long-term choice.
Getting an Accurate Quote for Your Specific Store
Because these tiers depend heavily on specific factors — catalog size, integration needs, design complexity — the most useful next step is getting a quote based on your store's actual requirements rather than a generic estimate. For the broader platform decision that should inform any cost conversation, see our complete ecommerce development guide, and for what to ask any company providing a quote, our guide to vetting an ecommerce development company.
Frequently Asked Questions
How much does a basic ecommerce website cost to build?
A simple catalog store (under 100-200 products, standard platform, minimal customization) typically costs $5,000-$12,000, covering theme customization, standard payment integration, and basic setup.
What increases ecommerce website development costs the most?
The number of third-party integrations, how much custom versus theme-based design is involved, catalog complexity beyond just product count, and any multi-currency, multi-language, or multi-region requirements all push cost upward significantly.
Are there ongoing costs after an ecommerce site launches?
Yes — platform or hosting fees, payment processing fees on each transaction, app or plugin subscriptions, and periodic maintenance are all recurring costs that should be budgeted separately from the initial build.
Is a custom ecommerce build always more expensive than using a platform?
Upfront, yes. Over a longer time horizon, the ongoing cost of working around a platform's real limitations can sometimes offset that gap for stores with genuine platform-limiting requirements, though this isn't the case for most stores.