You're not seriously going to argue that you can't ask for references at one of these places and find a reputable buyer, are you? If you want to buy a pin, and you're new to a group, just ask the community for past experiences with that seller. It's not insulting, it's good practice. If nobody has any experience with that seller, and the machine isn't local, it's up to you, but your own fault if you get burned. If you do your homework, you'll be just fine buying either here, on KLOV, or over at RGP.