When we first started talking to business owners and nonprofits about lowering their transaction fees, we were surprised to discover that many of them had no idea what they were currently paying to accept credit cards. So, we offered to take a look at their current merchant statements to find out. What we found was even more surprising: most of the statements showed that these merchants were paying a lot more than the percentage rate they were originally quoted for credit cards. It took some digging to figure out the effective rate being paid, however, because merchant processor statements are universally inscrutable.
Jeremy Almond on March 3, 2015