{"id":115,"slug":"shopify-custom-function-migration-cost","title":"Shopify checkout customization rebuild: $2k–$10k per shop, 4–8 weeks for complex Scripts","kind":"reference","scope":"business","status":"current","audiences":["claude-code","candid-team"],"topics":["migration-mechanics","ecommerce-platforms"],"reference_body":"**Claim:** Custom Shopify Function migrations (rebuilds of checkout.liquid / Scripts customizations as Checkout UI Extensions) typically cost **$2,000–$10,000 per shop** depending on logic complexity (SANOMADS, 2026). \"A complex Scripts setup takes **4-8 weeks** to migrate\" (Revize.app, 2026).\n\n**Sources:** SANOMADS 2026 migration analysis; Revize.app migration guide 2026.\n\n**Confidence:** Industry-consensus.\n\n**Per Shopify Help Center**, unmigrated customizations \"**will be lost**\" in the January 2026 auto-upgrade. This is not a \"consider migrating\" recommendation — it's a \"your code will be deleted on this date\" event. See [[shopify-checkout-liquid-sunset-2024-2026]] for the full timeline.","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"shopify-checkout-liquid-sunset-2024-2026","title":"Shopify checkout.liquid sunset (Aug 2024 → Aug 2025 → June 30 2026) — unmigrated customizations will be DELETED","kind":"reference","scope":"business","link_type":"depends-on"}],"incoming":[{"slug":"research-brief-owning-your-stack","title":"Research brief: Owning your stack — why agency-managed platforms cost more than they save (piece 4 of 15)","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-05-22T19:17:26.800Z","updated_at":"2026-05-22T19:17:26.800Z"}