Ecommerce website cost for the build, the platform and the monthly bills

Short answer: a professionally built store for a small or midsize US business usually costs $5,000 to $25,000 up front. A freelancer on Shopify or WooCommerce tends to land between $2,500 and $10,000, while agencies quote $5,000 to $25,000 for the same size of shop and well beyond that for complex builds. Running it costs roughly $150 to $600 a month before you spend anything on ads.

Ask five firms what your online store will cost and you'll get five numbers, some of them ten times apart. Most of those quotes are honest. They just price different scopes. This guide splits the ecommerce website cost into line items you can hold next to a real quote, and it flags the items that most quotes quietly leave out.

What drives the price of an online store

Four decisions set the number, and only one of them is about looks:

1. The platform. A hosted subscription (Shopify, BigCommerce), open source you host yourself (WooCommerce, Magento) or fully custom code.
2. Catalog size. Fifty products and five thousand products aren't just a difference in page count. The bigger catalog needs filters, site search, variant logic and a clean way to import product data.
3. Integrations. Inventory, accounting software such as QuickBooks, shipping labels, sales tax calculation, your ERP or your wholesale portal.
4. How it's built. A purchased theme adjusted to your brand, or a design created from scratch.

In most quotes the design isn't the expensive line. Integrations are. Syncing stock with a warehouse and pushing tracking numbers to customers automatically can cost more than the whole storefront, and that work decides whether someone on your team retypes orders by hand after launch.

Platform fees compared across Shopify, BigCommerce, WooCommerce and Magento

Here are the published subscription tiers and the build ranges US providers typically quote for each platform in 2026. Treat them as a starting point, since vendors change plans often.

The subscription is only part of the platform bill. Shopify charges an extra transaction fee when you use a payment gateway other than Shopify Payments, and many features store owners assume are built in (subscriptions, product reviews, advanced shipping rules) come from paid apps. WooCommerce has no monthly license, but premium plugins run about $500 to $1,500 a year, and updates and security become your job. For a deeper side-by-side, see our ecommerce development page.

Build cost when you do it yourself, hire a freelancer or use an agency

Who builds the store changes the price, the timeline and the kind of thing that goes wrong. Typical US ranges in 2026:

• Doing it yourself on a theme: $0 to $1,000 for a theme and a few apps, two to six weeks, and usually 60 to 120 hours of the owner's time that nobody puts on the budget.
• A freelancer: $2,500 to $10,000, three to eight weeks. The weak spots are one person's availability and the gap between the designer and the developer when those are two different people.
• An agency: $5,000 to $25,000 for a small or midsize store, six to sixteen weeks, and $50,000 or more once integrations pile up. A real share of the fee pays for coordination rather than production.
• Custom development: $50,000 to $250,000 and more, four months or longer. It pays off only when your sales process can't fit any platform.

The classic mistake when comparing quotes: one includes design work and the other doesn't. Adapting a premium theme is a small line, while a custom UX and UI design with wireframes for every key screen is often $5,000 to $25,000 on its own. Before you weigh two totals, check that both cover the same screens, the same integrations and the same data import. Our UX and UI design page lists the screens a store project should include.

Monthly costs of running an ecommerce store

This part of the budget surprises owners most, because a build quote simply doesn't show it. Realistic monthly lines for a small or midsize US store:

• Platform or hosting: $10 to $400, more on enterprise plans.
• Payment processing: usually around 2.5 to 3.5 percent of each card sale plus a small fixed fee per order, charged by Stripe, PayPal, Shopify Payments or your processor.
• Apps and plugins: $50 to $300, including annual licenses spread by month.
• Technical support: $100 to $500 for updates, backups, speed checks and small fixes.
• Sales tax and shipping tools: $20 to $150, depending on how many states you ship to and how many carriers you use. Ask your accountant which states you collect in.
• Marketing and traffic: realistically $1,000 to $3,000 as a floor. Below that, most stores never collect enough data to tell what's working.

Marketing is the easiest line to skip and the most expensive one to skip. A store without traffic is an expense, not a sales channel. Over the long run SEO for your product and category pages is usually the least expensive source of visits, but it takes months to build, so most stores pair it at launch with Shopping campaigns in Google Ads. If your products don't appear there, this guide on products missing from Google Shopping walks through the usual causes.

Costs that rarely show up in a quote

Four items appear in almost every store project and almost never in the proposal:

Product photography

A store with 200 products needs 200 photos on a consistent background, and often three or four per item. That's a separate shoot with its own budget, usually priced per image. Phone shots against a warehouse shelf hurt conversion on the product page more than any design flaw.

Copy and policies

Category descriptions, checkout microcopy, shipping and returns policies, the terms page. Developers hand over a store full of placeholder text, and missing copy is the most common reason a launch date slips.

Data migration and redirects

Moving an existing store means moving products, customer accounts, order history and redirecting every old URL to its new address. Redirects cost little when planned up front and painful when someone notices, a month after launch, that the store dropped out of search results.

The time it takes to run orders

Someone has to process orders, answer questions and handle returns every day. At a few dozen packages a day that's already a part-time role, and finding the right person often takes longer than the build itself. Put that cost into the plan before you sign, not in month three of selling.

Total cost over three years

Comparing launch prices alone leads to bad calls, because the lowest launch price can turn into the priciest store to keep. Here's a worked example for a small store with a simple catalog and standard integrations. The inputs are assumptions, so swap in your own quotes:

• Shopify: a $6,000 build, a $105 plan, $100 in apps and $150 in support each month. Thirty-six months of running costs add about $12,800, for a total near $19,000.
• WooCommerce on a theme: a $7,000 build, $50 hosting, about $1,000 a year in plugins and $250 a month in support. Three years come to about $21,000.
• Custom store: a $60,000 build plus roughly $1,000 a month for hosting and developer upkeep lands close to $96,000.

None of these figures include payment processing or marketing, which scale with sales rather than with the platform. Two takeaways. First, for a typical store the gap between hosted and open source platforms mostly disappears over three years, so pick the one your team can actually run. Second, a custom build costs several times more and makes sense only when your sales have their own logic that no template supports: a product configurator, made-to-measure pricing, price lists per account, or retail and wholesale running side by side.

Three budget scenarios for a new store

Up to $10,000. Shopify, BigCommerce or WooCommerce on a solid theme, up to about 200 products, standard payments and shipping, and the theme adjusted to your brand. Expect two to six weeks. This budget fits a company testing whether online sales work for it before building a long-term channel.

$10,000 to $40,000. A custom UX and UI design, integration with inventory and accounting, a full catalog import, analytics set up in GA4 and basic SEO at launch. Most serious stores of small and midsize US companies sit in this range.

Above $40,000. Custom sales logic, several warehouses, international shipping with separate fulfillment, and an ERP integration. At this scale the visual design is the smallest line, and it's the wrong place to save, because a poor category structure costs you lost orders.

Whichever tier you're in, the build is only half the plan. The other half is who brings in traffic once the store is live. If you'd rather not assemble that team yourself, here's how Marketers.com works: a senior project manager with 15+ years of experience matches a vetted specialist or a small team to your store and stays your single point of contact. You can start with a free marketing analysis, delivered as a PDF within 24 hours.

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