Per transaction, Stripe charges 1.5 % + 0.25 € fees (for credit cards in the European Economic Area) - these break down into 1.4 % from Stripe and 0.1 % from coapp.
For credit card providers from the United Kingdom, + 1.1 % is added.
For credit card providers outside the European Economic Area, the fees per transaction are 2.9 % + 0.25 €.