How do I change my store's design without breaking the one that already sells?
The redesign is done in a copy of your store: the one that sells is not touched until you approve the new design. If something doesn't convince you, you go back.
With an agency or a freelancer
- Editing a Shopify theme with an expert starts at around €440 ($475) and takes several days; redoing a home page, around €2,200 ($2,400).
- While they work, you have to coordinate when it goes live so as not to break the open store.
With a general AI
- With access to your theme, through connectors, MCP or by exporting it, it can propose and apply design changes.
- Preparing a safe copy, testing it and rolling back if something fails is something you organise yourself.
- Setting up and maintaining those connections, reviewing what it does and fixing whatever breaks takes technical knowledge, time and money: a higher opportunity cost than asking someone who already has it all solved.
With Devellia
- Devellia proposes the new design with your brand and your products.
- It builds it in a copy of your store and you see it working before publishing.
- It compares it with the approved design and fixes whatever doesn't match.
- You publish when you are convinced. If you don't like something afterwards, you go back.
- Design: €22.00 – €30.00 ($24 – $33)
- Build: €50.00 – €90.00 ($55 – $100)
Estimated prices, VAT included. You pay what it uses and never more than the maximum we show you before you start.
Questions
How much does it cost with Devellia?
Design: €22.00 – €30.00 ($24 – $33) · Build: €50.00 – €90.00 ($55 – $100). VAT included, and never more than the maximum we show you before you start.
Is anything published without me seeing it?
No. Devellia does it on a copy of your shop, you see it working and it's only published if you approve it. If you're not happy with something, it's undone.
Sources: Storetasker, "Shopify developer rates" (2026).