Hull Chipper is OK - not that I've bought from him. But he does a lot of Magic 3s.
Very few of us like to take credit cards. Too much commission to pay out and a lot of setup hassle.
I've sold 2,000 Messiah 2s, more than 50% of them by Paypal (
www.paypal.com) which takes low commission and the rest by bank transfer or cash in the post.
With Pre-mods, I take cheques because I don't release the PS2 until the cheque has cleared. If it bounces, there's always the next PS2.
Hope all that helps.