I am also interested in this question but would also love to know the average percentage people are paying. It’s always been interesting to me how stripe (and the like) are basically a premium over less polished tools like Authorize.net but are able to charge as much as a percentage point more for basically the same thing.

I’ve built payment integrations my entire 20 year career and have always appreciated how ease of use relates to cost, e.g. it’s hard to build tools as easy to use as stripe or Braintree, but I’ve wondered how these features play out when it’s so close to the actual money itself.