Our submission to the marketplace was recently declined because we don't integrate with the Shopify billing API.
This is because our platform is self-sustaining with an 'extra' Shopify integration that we'd like to publish to the marketplace. Shifting our entire business over the the Shopify billing API wouldn't work.
There are applications such as 'Recart' who seem to use their own billing and yet are still approved for a marketplace listing.
Sergiu Svinarciuc | CTO @ visely.io - Was my reply helpful? Click Like to let me know! - Was your question answered? Mark it as an Accepted Solution! - To learn more about the awesome stuff we do head over to visely.io or our blog