Why a build-your-own box cannot be a subscription.
It is the question we get most. Shopify’s Cart Transform refuses to merge lines when any of them carries a selling plan, and merging is how a custom box becomes one line with its own title and image. So the two exclude each other, on every plan.
A breakfast box of 6: the customer picks coffee, granola and jam, and the box reaches checkout as one line with its own title and image.
How to build it Curated boxes on subscriptionThe Weekend box every two weeks: a simple product with a selling plan, that the customer manages from their account.
How to build it Magic add-onsA gift wrap and a card added to the box, in the same cart line.
How to build it- Mix and match bundle appfrom $14.99 /mo
- Product add-ons appfrom $9.90 /mo
Free for the box
The pattern that works: the build-your-own box as a one-off purchase, curated boxes as simple products with a selling plan. There is a workaround, the empty box, but every product inside must cost the same.
See plansThe store that shows it.
Sunday Crate
Built from the kit by an agent, reviewed by a designer. The teardown explains every mechanic on this page, with the Figma file to clone.
Where to start.
Start in Figma.
Go live on Shopify.
Free to build, pay only when you go live. One Shopify app instead of ten, billed on the store’s Shopify invoice.
- One app on the Shopify bill, not ten
- Free to build, pay only when you go live
- Works on Basic, Grow and Advanced
- Your 1.x store keeps working
- Every element stays yours to change
- Docs indexed in llms.txt