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From £30,000
For operators past the point where Shopify pays back — B2B pricing, vendor splits, custom checkout, real inventory rules. The margin Shopify charges per-app for, folded back into a codebase you own.
What you get
A Web Apps solution — the same production foundations, specialised for catalogue, checkout and inventory.
Custom attributes and variant logic modelled properly, not bolted onto a theme.
Stock holds, multi-warehouse, low-stock thresholds — built on signed webhooks, audited per attempt.
Single-page, multi-step, or B2B quote flow — whatever your buyers actually need.
Retry, dunning and webhook reconciliation. The billing event is the source of truth, not a polling job.
How it runs
The same four stages run every engagement. The service decides the scale, not the method.
01
Planner
Catalogue rules, pricing tiers, fulfilment topology and checkout edge cases written down. Two weeks.
02
Hub
The product model, pricing engine and inventory rules named on the page. You sign off before code.
Pricing
Single-storefront migration with the foundations and a custom checkout.
£30,000Per-customer pricing, quotes, net terms and a vendor portal.
£60,000Multi-currency, real ops tooling for a team of five.
£100,000Proof in production
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Read guideQuestions
Shopify is right until your pricing logic is. B2B tiered pricing, configure-price-quote, bundled SKUs, custom checkout flow — custom builds the rules into the data model. You own the cart, the checkout, the customer record. App-store rent stops.
Yes. Products, variants, customers, order history, subscriptions, reviews — pulled via API, mapped into the new schema, reconciled before cutover. SEO redirects preserved. The migration runs in shadow until you're satisfied, then DNS flips.
Per-customer price lists, volume breaks, contract pricing, MOQ rules, region multipliers. Encoded in the data model, not hard-coded in checkout. Audit log on every price change.
Where we work
The service covers the whole of the UK, remote-first. Looking for custom ecommerce development near Leeds? The local pages cover on-site availability and sector context.
Talk to us
Scoped and priced before anything is built.
03
Forge
Eight to twelve weeks. Migration scripts run dry against your Shopify export before cutover.
04
CanOS
Cut over with DNS and a rollback ready. First weekend of real traffic watched together.
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You. Your repo, your Stripe, your Supabase, your domain. No Canarlo SaaS, no licence fees, no app-store rent. The handover names every cron, every webhook, every environment variable.