I know of a few online retailers that specialise in out-of-print (OOP), second-hand, and original editions of RPG books and accessories. Let's make a definitive list of them!
I want to start a game with some friends. We never played using any book but now we want to try that out. I got the PLayer, DM and monster book but that's it. As I'll be DMing for the first time I'm ...