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Re:Ask HN: Why do all payment processors charge 2.9% + $0.30... by jsonne on Friday October 11, 2013 @02:43PM (#6535050)
That's correct on the ACH bit.

In so far as large use cases, they have some really good traction in the bitcoin market. I believe that they are the go to for transferring USD in and out of MT. Gox.

Re:Ask HN: Why do all payment processors charge 2.9% + $0.30... by gustoffen on Friday October 11, 2013 @03:46PM (#6535489)