Don't sign up, it's a rip-off!
Recommended by Costco, I decided to offer clients the ability to pay via credit card. I was told it would be a 1.9% +.29 per transaction. So I processed a payment - and was charged 4.2%, and a big pile of fees on top. Not what I signed up for, and will not be using their service again. Amazingly they still pile on the charges, another nearly $50 for no services at all. What a bunch of scammers.