Shopify vs WooCommerce UK: The Real 3-Year Cost (2026)
/ Mathieu Muller
#shopify
#woocommerce
#uk
#cost-comparison
This piece walks through five concrete UK scenarios, each with a clear recommendation and the reasoning behind it. The numbers come from the Shopify vs WooCommerce 3-Year Cost Calculator, which uses pricing verified against live vendor pages (last refreshed 2026-05-13) and is rerun quarterly.
The framing both platforms get wrong
Marketing pages on both sides flatten the comparison to “monthly plan + transaction fee,” which understates Shopify’s third-party gateway skim and WooCommerce’s true total cost of ownership (TCO). To compare honestly you have to look at:
Platform fee — Shopify’s monthly plan (from £1900/mo on Basic) vs WooCommerce hosting + domain (from £1399/mo).
Payment processing — Shopify Payments vs Stripe direct on WooCommerce, both before and after PayPal mix. Shopify adds a third-party gateway skim on non-Shopify-Payments volume (2% on Basic, 1% on Grow, 0.6% on Advanced).
Feature add-ons — the app stack on Shopify or the plugin stack on Woo. For a store that needs subscriptions, loyalty, multi-currency, etc., the add-on stack often costs more than the platform itself.
Build + ongoing maintenance — labour, not licence. Self-built or freelance-built? Hours per month for updates?
Time-to-launch opportunity cost — not in the calculator headline, but real. Shopify reaches “open for business” faster on every profile we tested.
The calculator computes lines 1–4 in GBP from your inputs. The rest of this post walks through what those numbers mean for five common UK profiles.
What changes when a developer is in the picture
Every scenario above assumes the merchant is buying defaults — picking a theme from the marketplace, installing apps or plugins, and running the store through the platform’s standard interfaces. That’s the common case, and it’s the case the calculator’s default day rate (£500/day freelance help) is calibrated for. When an in-house developer or a serious agency build is in the picture, the cost and capability story shifts on both platforms — in different directions.
On Shopify, a developer unlocks the Dawn-fork path and the Functions / Hydrogen / App Bridge ecosystem. Dawn is Shopify’s open-source reference theme; a dev can fork it, restructure the Liquid templates, and ship a brand-specific theme without paying for a premium marketplace one. Beyond theming, Shopify Functions lets you write custom checkout logic (discounts, delivery options, payment customisations) in JavaScript or Rust. Hydrogen gives you a React-based headless storefront with Oxygen hosting. The Storefront API powers any custom integration; App Bridge lets you build custom admin apps that live inside the Shopify admin UI. The constraint is that everything still happens inside Shopify’s allowed extension points — you cannot replace checkout below Plus, and you cannot change the underlying ecommerce data model.
On WooCommerce, a developer unlocks essentially the entire WordPress dev surface. Custom themes — block-based, classic, or hybrid — are the norm rather than the exception for serious stores; most UK agencies running production Woo sites ship their own rather than fight a marketplace theme into compliance. Custom plugins let you integrate any third-party API, extend WP’s REST API with bespoke endpoints, hook into the cart/checkout/order lifecycle, build custom Gutenberg blocks for the content team, or wire WooCommerce into an ERP or warehouse system. Headless WooCommerce (via the WP REST API or the WPGraphQL plugin, paired with a Next.js or Astro frontend) is a credible pattern — slower to set up than Hydrogen, but with no API rate limits and no platform vendor in the loop.
The practical implication: dev time the standard calculator treats as a cost is treated as an asset by the merchant. A custom theme, a custom plugin, and a set of custom integrations are owned outright on WooCommerce — they relicense or relocate with the business. The equivalent hours sunk into Shopify produce extension code that runs inside Shopify’s platform, useful but not portable. For the same revenue scale and feature set, a dev-led WooCommerce build often lands materially cheaper over 5+ years and significantly more capable in the specific ways the business actually needs.
When dev-led WooCommerce wins decisively:
The store needs custom B2B logic — per-customer pricing rules, NET payment terms, role-based catalogues — that Shopify only solves at Plus.
The merchant has internal systems (ERP, warehouse, CRM, PIM) that need bidirectional integration beyond what Shopify’s app marketplace offers.
The customer journey has unusual requirements — product configurators, complex tax positions, mixed-currency invoicing, marketplace logic — that warrant bespoke code rather than apps.
The merchant wants ownership of the codebase and full control over the upgrade path.
When dev-led Shopify still wins:
The team is React-first and Shopify Hydrogen’s Oxygen hosting + Shopify-managed scaling is a feature, not a constraint.
The build is greenfield and time-to-launch beats long-term flexibility.
The merchant wants dev hours spent on storefront experience and marketing surface area, not infrastructure or maintenance.
The honest summary: default-merchant calculations favour Shopify; dev-led merchant calculations often favour WooCommerce. The calculator’s default day rate is right for a freelancer-built Woo store. For an in-house dev who’s building, not maintaining — i.e. the cost is salaried, not hourly — WooCommerce’s flexibility starts to dominate the comparison and the customisation budget compounds into long-term capability rather than recurring app fees.
The crossover patterns to remember
Across the five scenarios, three patterns recur:
Shopify wins when the platform’s built-in features cover your needs. Standard B2C, multi-currency, security, backups, shipment tracking, basic reviews — Shopify gives all of these for free. WooCommerce gets you the same end-state, but you assemble it from paid plugins and self-managed infrastructure, and you pay for the assembly in dev time you can’t reclaim.
WooCommerce wins when you need something Shopify charges separately for. B2B, subscriptions at scale, custom checkout, deep ERP integration, ownership of the codebase. The plugin model is much cheaper than Shopify Plus when the feature you need isn’t on Shopify’s lower tiers.
Build cost dominates the year-1 comparison. Self-build at honest UK rates (£500/day for competent freelance help) puts WooCommerce £8–12k behind Shopify in year 1 alone. The Woo case has to win that back through years 2 and 3 — which it does, for the right merchant profile, but it’s not automatic.
If you want my opinion on a specific profile that doesn’t fit the scenarios above, email me with the numbers and I’ll send a written take.