If I use my normal VISA card at a retailer they pay an interchange fee right?
If I create a physical card through stripe, and I use that card at a retailer does the retailer still pay a interchange fee? If so who does that go to? How does that system work?
Normal interchange would apply to the merchant but for debit cards it's pretty small. Interchange accrues to the issuer which in this case appears to be Stripe (and/or its issuing partner).