Two Bay Area stores with the same catalogue can differ fourfold in cost. It is never the design that separates them.
Ecommerce website design in San Francisco costs $7,000 to $55,000. Product count matters less than most people expect. What moves the number is how many systems the store integrates with, whether there is a subscription model, and whether the experience is conventional or genuinely bespoke.
Payments, tax, shipping, inventory and PCI scope are handled and your team can run the store without a developer. Custom is justified when the experience is the differentiator or the catalogue logic exceeds what the platform models.
Inventory, fulfilment, accounting, a 3PL, a marketplace, a subscription engine. Each one is a project. A quote listing integrations as a single bullet has not scoped them, and the difference appears as change orders.
Recurring commerce is common in this market and it is not a plugin decision. Pausing, skipping, swapping, dunning and honest cancellation all have to be designed, and the cancellation flow decides your reputation.
Most traffic is mobile and most abandonment happens in the last three steps. Guest checkout, wallets, address autocomplete, no cost revealed late and no field you did not need to ask for.
Products change with the season; categories persist, accumulate links and answer comparison searches. Treat them as content rather than as an automatically generated grid, or paid traffic carries the whole business.
Ecommerce sites are image heavy by nature. Modern formats, a correctly sized image per breakpoint, lazy loading below the fold and a properly configured CDN. This is where the money goes and where the conversion is.
| Project | Range (USD) | Timeline | What you get |
|---|---|---|---|
| Shopify, conventional catalogue | $7,000 to $15,000 | 5 to 8 weeks | Custom theme, product and collection templates, payments, shipping, one or two integrations |
| Shopify with real complexity | $15,000 to $30,000 | 8 to 14 weeks | Above plus subscriptions, pricing rules, 3PL, marketplace or ERP integration |
| Custom or headless | $30,000 to $55,000 | 12 to 20 weeks | Bespoke front end, deeper architecture, performance engineering, documentation |
| Replatform from another store | $9,000 to $26,000 | 6 to 12 weeks | Catalogue and customer migration, redirect mapping, parity testing |
| Subscription setup | $3,000 to $12,000 | 2 to 6 weeks | Plan structure, pause and swap flows, dunning, cancellation |
| Growth plan | $900 to $4,500 per month | Ongoing | Merchandising, content, testing, performance, releases |
If a quote does not name each integration separately, it is a price for a storefront and everything behind it will arrive later as a change order.
| Ask them | A good answer sounds like | Walk away if |
|---|---|---|
| What does this actually cost? | A range, and what moves it, before a call | You must book a call to learn the ballpark |
| Who owns the code and the repository? | You do, in your own account, from day one | Ownership depends on staying on a retainer |
| Can I see Core Web Vitals on three live sites? | URLs, and an honest word about the slowest | They show you portfolio shots |
| Who maintains this after launch? | A named arrangement and response time | Not discussed until it breaks |
In a market where your buyer is frequently technical, an agency that will not answer these in writing has told you something.
| Problem | What it costs |
|---|---|
| Shipping cost revealed at the final step | The single largest cause of abandonment |
| Forced account creation | Guests who would have bought and did not |
| Subscription cancellation made deliberately hard | Chargebacks, complaints and a reputation you keep |
| Integrations discovered mid-build | Change orders and a launch date that moves |
| Category pages as automatic grids | Nothing durable ranks and paid traffic carries everything |
| Full-size images served to phones | Customers gone before the first product renders |
A conventional Shopify build runs $7,000 to $15,000. Stores with subscriptions, pricing rules or real system integration run $15,000 to $30,000. Custom and headless builds run $30,000 to $55,000.
Shopify for the large majority. Payments, tax, shipping, inventory and PCI scope are solved and your team can run it without a developer. Custom is justified when the experience itself is the differentiator.
Because most quote the storefront and not the systems behind it. Inventory, fulfilment, accounting, 3PL and marketplaces are each a project. Ask every agency to price them individually and the comparison becomes honest.
Yes, and it deserves proper design rather than a plugin decision. Pausing, skipping, swapping, failed payment handling and a cancellation flow that is not deliberately hostile, because the cancellation experience is what customers tell people about.
Modern formats, a correctly sized image per breakpoint rather than one large file scaled down, lazy loading below the fold and a properly configured CDN. On a product-led store this is the highest-value engineering in the build.
Yes. Catalogue and customer migration, redirect mapping for every old URL and parity testing before cutover. The redirects protect your rankings and are the part most replatform quotes underprice.
That is the point of choosing a platform. Products, collections, pricing, content and promotions all editable without a developer, and we train the people who will actually be doing it.
No. We work with Bay Area brands remotely on overlapping Pacific hours. We would rather state that than imply otherwise, and not carrying those overheads is part of the cost difference.
Send us what you are trying to fix and we will tell you what it takes, what it costs, and whether we are the right people for it. If we are not, we will say so.