Ecommerce Website Cost Calculator

Platform choice dominates cost — Shopify/WooCommerce build vs fully custom.

Result

Build estimate£5,600.00 – £8,800.00
Platform fees (~)£105/mo
Payment processing~1.5–2.9% + 20–30p/order
Maintenance (~)£88.00/mo

Ecommerce Website Cost Calculator — FAQs

Shopify or custom?

Shopify for <£1M revenue — £4–8k build, £105/mo platform. Custom only pays off at scale or with genuinely unusual requirements.

What does headless add?

Headless (custom frontend + Shopify/commerce backend) roughly doubles design+build cost but gives complete UX control and speed.

Hidden costs?

Apps/plugins (£50–300/mo typical), transaction fees, product photography, and ongoing CRO work.

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