GunBroker is just the medium,you are dealing with hundreds of individual buyers and sellers. I've done about a hundred deals and I've only been screwed twice. In one case I sold ammo to a guy who never paid for it and in another case I bought a used shotgun that turned out to be inoperative and had to be sent to an authorized repair center for repair. All of my other transactions went smoothly and I became friends with several of the people that I dealt with.