This is pretty cool (I'm working on an ecommerce app now). What I'm not clear on is this: Can apps selling relay products get a cut of the sale? What incentive is there for a "product discovery app" (or whatever) to sell other products? Can they define some sort of fee %? UPDATE: Chatted with Stripe on IRC and they clarified that there's currently no way to share sales revenue or let apps define a % commission.
Indeed there is no way to do so at the moment. But we have that on our radar and we'd like to construct something that makes sense for apps and sellers.
Some questions related to that: How would you see it working? Isn't ads the new affiliation in the app world?