In an article on ComputerWorld, contributing columnist  Evan Schuman has wondered ‘Why merchants let their payment processors get away with so much.’ He points out a case where Mercury Payment Systems was sued for inflating fees it charged shoppers on behalf of merchants.

Do the same Fraud Risks Apply with Bitcoin payment Processors?

http://www.computerworld.com/article/3162097/retail-it/why-do-merchants-let-their-payment-processors-get-away-with-so-much.html