Custom eCommerce Site or Standard Theme, How to Choose Based on Your Revenue Stage

Last week I had a call with a porcelain brand, fairly high-end tableware. Their eCom makes up less than 5% of revenue, something like 20 to 30 orders a month, average order value around €150-180. They're on WooCommerce today and they were torn about migrating to Shopify with a real custom site, something fully bespoke that looks sharp. I advised them to do the opposite: stay on a theme and hold onto their budget.

At your stage, don't go full custom. Grab a nice theme, it does 90% of the job. Keep your cash for something else.

I'm going to explain why, and more importantly when custom actually starts to make sense. The decision comes down to the numbers. Taste comes second.

What full custom actually is and why it costs so much

Before we talk revenue stage, we need to agree on the words. When I talk about an eCom site, there are broadly three ways to build it.

The simplest one, the standard theme. You grab a Shopify theme off the market, sometimes for a couple hundred bucks, you swap the font, the logo, drop in your photos, and done. You've got a clean site that runs well. You're a bit limited by what the theme allows, but honestly, for most brands, what the theme allows already covers 80 to 90% of your needs.

In the middle, the hybrid. You start from a theme you like, and you add a layer of custom dev to handle your specific needs. Your theme does 70-80% of the job, and we bolt a development layer on top for the missing 20%. In a lot of cases, it's the best bang for your buck.

At the far end, full custom. Here you design from scratch with whatever functionality you want, and you build only what you need. The field of possibility is infinite. It's beautiful and it's exactly what you want. And it's by far the most expensive option.

Because what people often forget to mention is that custom design necessarily drags custom development behind it. The moment you design a one-off mockup, a flow that exists nowhere else, it has to be built from zero. No theme does it for you. So every slightly original design idea is extra days of dev. And the bill climbs fast.

To give you a sense of scale. A standard theme set up properly, you're looking at 5 to 10K. The hybrid, a performant, editable site with your custom dev layer, you're closer to 10K. Full custom, design and development from A to Z, you climb to 25-30K easily. And that's not even counting maintenance down the line, which is heavier on custom because it's code you have to keep alive over time.

Your revenue stage changes everything

The real factor is your stage of growth. The site we build with a brand doing 20 orders a month is nothing like the one we build with a brand doing €2M in revenue. There's way less data to analyze, way less at stake when it comes to squeezing conversion out of every hundredth of a point.

For my porcelain brand, dropping 25K into a full custom site when eCom is less than 5% of revenue makes zero sense. That money is worth a thousand times more invested in product photography, content, and acquisition. Content and the way the product is shown accounts for 50 to 80% of a site's performance. A 30K custom site with mediocre photos converts worse than a $200 theme with photos that kill.

The real question is what stage you're at and where your money earns the most. The "do I want a pretty site" question comes after, if at all. The strategy that takes you from €1M to €3M isn't the one that gets you to €10M, and it's the same with your site. What's smart at 500K can be a mistake at 5M.

Here's how I actually break it down.

Below 500K in eCom revenue, go with a clean standard theme. Full stop. You don't have enough volume for micro-gains in conversion to justify the investment. Put your budget into product and acquisition.

Between 500K and 2M, the hybrid gets interesting. You start having enough traffic for well-chosen custom features to pay off. A product configurator, a flow specific to your business, a module that smooths out a major purchase barrier. At that point, a euro of custom dev can bring back several euros in conversion.

Above 2M, full custom can really hold its own. You've got the volume to amortize the investment, and at that stage, every conversion point you gain is a lot of money. Custom design becomes a real edge, not just a whim.

These numbers aren't set in stone, it depends on your margins and your sector. But that's the idea. Custom is earned with volume.

The UX mistake I see all the time

There's a trap a lot of brands fall into when they invest in a unique site. They try to reinvent how people buy online.

Consumers have eCom habits. They know where the cart is, how a product page works, what a checkout flow looks like. They've built those reference points buying hundreds of times on hundreds of sites. The day you break those cues to be "original," you break conversion too.

I've seen gorgeous sites, award-winners on design galleries, that converted half as well as a standard theme. Because the user had to stop and figure out how to buy. And in eCom, the moment the customer has to think, they leave.

Your site is just like a physical store. If you move the register every day and hide the prices, people walk out without buying. Same logic online.

The exception is brands with huge name recognition. A celebrity, an ultra-niche brand with a community of fans. They can afford a genuine work of art because their community will buy no matter what. These people buy on emotion, price and usability come second. But if you're an ordinary company, even a high-end one, you're better off keeping the standard codes. You can build a beautiful site without losing the buyer along the way.

Redesign or migration, that's a different song

Something people often conflate is a redesign and a migration. They're two very different beasts.

A redesign is when you're already on Shopify and you rework the design, the navigation, the experience. You change the facade but the foundations stay. It's relatively clean. We did one recently for a ready-to-wear brand that wanted to start from a cleaner base, and the bulk of the work was on design and the customer journey.

A migration is when you switch platforms entirely. For example going from WordPress to Shopify, like my porcelain brand was considering. That's much heavier. You have to bulk-export your products, orders, customers, and reimport them cleanly onto the new platform. There are tools for this, like Matrixify on Shopify, which do a solid job on bulk export-import. But you have to factor in the config time, the data mapping, the redirects so you don't lose your existing traffic. It's a real project, not a facelift.

So if you're torn between the two, first ask yourself about the platform. If you're already on Shopify and just want to modernize, a redesign on a standard theme will cost you a lot less and ship faster. If you have to migrate, the project is bigger, so you might as well use it to carefully pick the base you'll build on for years to come.

What I actually proposed to the porcelain brand

Back to the original case. I didn't sell them a 30K site. I offered them two options, both well below that.

Option one, our proprietary theme in its easy version, no custom mockup. We built it to allow heavy customization without costing too much, and above all so the client can edit their own site autonomously once it's delivered. Want to change a collection, add a page, tweak a block, you do it without calling us every time. The other route, a market Shopify theme that matches 90% of their needs, with a clean migration from WordPress to Shopify, then the client customizes the rest themselves. Same logic, we make them self-sufficient.

In both cases, clean standard, done well, editable. We're not here to make a work of art. A sales tool that works, delivered fast. And one that leaves them as much budget as possible for product and acquisition. Because at their stage, that's where the money needs to go.

If you want to dig into the logic of investing in the right place based on your maturity, I'd suggest reading why an eCommerce audit should always start with your P&L before you even talk about a redesign. Most of the time, the site isn't your real problem.

How to decide for your case

If I had to sum up the decision in a few points.

Look at your eCom revenue stage first. Below 500K, standard theme, no hesitation. The money you'd spend on custom will earn you ten times more elsewhere.

Count the total cost, not just the initial quote. A custom site is 25-30K up front, plus heavier maintenance behind it, plus the technical debt that piles up. With a standard theme, you switch versions in two or three years if needed, no big deal.

Don't break buyer habits on UX unless you have a community of fans who'll buy no matter what. For an ordinary brand, standard codes sell.

And if you have to switch platforms, treat the migration as the real project it is. That's the moment to pick your base carefully, because you won't do it again for a long time.

Custom just matches a different moment in your growth than standard does. Build clean standard until you have the volume to justify better, and invest the difference where it actually works.