It costs much more then that, that's their feeds on top of CC, conversion etc. at 20K mrr you are easily paying 1k p/m in Stripe & Processing fees.
replyHow is that different than any other payment processor? Interchange isn't free anywhere
replybecause stripe on purpose hide fees, constantly asks you to try out new features and then secretly charges you more then market price when you say yes. See radar, managed payment, stripe billing management etc.
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