I think there's two slightly different questions here. First, is the payment process safe? There's certainly some sorts of Internet trading where I wouldn't trust people with my CC number. Renderosity, and the other major Poser/3D sites are not in that group. Second, are the goods as advertised? Well, that's a problem you get everywhere, even in a face-to-face real-world deal. And there's certainly people out there who are better artists that advertising copy-writers. And, yes, there are problems. I'm sure some of the problems are called customers, too. If my eBay dealing are any guide, some customers must be real bastards. Compliments are almost embarrassingly easy to get.