The main problem in early stages will be
A lot of people knowing each other driving the price of a few specific items and creating higher prices for them… then a unknowing person buying at a to high price for a worthless piece being stuck to it… but yeah DYOR and buy what you deem worthy I guess
Actually, this is the only scheme, and not only a lot of people knowing each other, but often just only one person, acting with different wallets.
Market rigging at its bests, like good old times in traditional markets.