Well, short of signing up I can't see the payment mechanism, but on Roger Celeb (site picked at random) the pay URL takes me to this page:-
http://www.rogerceleb.com/join.phtml...=TG&wm_refurl=
Doesn't talk about credit cards, but maybe that's on a later screen. On the other hand if you are in the US and see a credit card screen immediately, you'll at least know that it's *different*!