Sam, I have guildies in Indonesia and Malaysia, and they don't have pre-paid cards there. Also having done some research for a guildie, I found out that Malaysia in particular does not really support any kind of credit card system at all.

This is one of the reasons that so many people fall for the "Plat for Gold" scams. They are so desperate for plat that they will try anything. And it's usually just for something small that they really want like a vanity.

This is seriously something that you might want to look into. You might be missing out on a potential revenue flow because of this.