Adyen's pricing seems to be higher and way more confusing than Stripe's.[0][1]
AMEX and Discover's transaction costs are a percent higher on Adyen, and I can't actually tell what Mastercard or Visa will charge since it is obfuscated. The cherry on top is the FAQ at the bottom that describes what interchange++ is but doesn't actually tell you a range of fees that it can be. I guess it's cool to see in detail all the middle men taking a cut of my revenue, but I'm way more concerned about the actual amount that is being taken out ahead of time instead of it being a surprise for every transaction.
It basically is always cheaper for almost everything than Stripe (except AMEX). Interchange++ is always less than Stripe's equivalent charge (2.9% or lower for European cards) and 12¢ is less than 30¢.
Bear in mind, at any meaningful volume, Stripe does IC++ too and it isn't expensive
edit: Looking at their (listed) acquiring and processing fees, Stripe appears to be cheaper
That said, I don't know how Adyen's support is, but sadly Stripe's is honestly absolutely crap. Every single support interaction I've had with them has been incredibly slow and incredibly painful.
I'd guess that with the bigger deals they are doing all these things are up for negotiation anyway so they might not need a slick landing page with a simple pricing that a developer can understand in a few minutes.
AMEX and Discover's transaction costs are a percent higher on Adyen, and I can't actually tell what Mastercard or Visa will charge since it is obfuscated. The cherry on top is the FAQ at the bottom that describes what interchange++ is but doesn't actually tell you a range of fees that it can be. I guess it's cool to see in detail all the middle men taking a cut of my revenue, but I'm way more concerned about the actual amount that is being taken out ahead of time instead of it being a surprise for every transaction.
[0] https://www.adyen.com/pricing?navItem=northamerica [1] https://stripe.com/pricing