ebay is too expensive (fees) and too risky. I guess if you find someone with great feedback you'd be safe but they may not be a photographer and might just resell stuff. In any case most high feedback sellers on fm are also shooters and have reputations. I've never been burned there and have bought a lot over the years. I doubt you would find a single negative thing said about Fred's buy and sell forum from members here. It is highly regarded. The b&s forum here is just as good but it's very slow. Almost everything can be found on fm.Why?