Propay's good for a merchant account. Less than a lot of other places. Found out about this when I was selling silver at fairs. Limit $1000 taken in per month. Never hit that limit myself, so I don't know how you'd raise it. But for $45/year + 3.50% + $0.35 per transaction, I can take MC/Visa and Discover. Just zipped over to their site--they've added Amex, too. It's not a bad alternative, compared to some merchant accounts I've seen that require hundreds of dollars and higher fees.