But you're not holding fiat to yourself, like you would with a Picasso. Instead, you're just passing it further - you spend it. I don't see how it would hurt the average Joe!
And again, I'm talking about really qualitative stuff here, mainly coins, that are not easy to spot at all, maybe even impossible!
than why you try to sell it, when quality is sooooooo gooooood? just go in the shop and spend it or in the bank and put all that money in your bank account and become rich. cheater always stay cheater: "my product is the best, impossible to discover that it is fake, tralala". if anyone use logic, he will ask himself why you sell him almost real coins for some small part of money when you could spend that money by yourself. answer is: you are cheater and you need stupid victim.
do you know what happen with cheaters in drug trade? they finish dead. therefore cheaters stay small criminals, they know what happen with such people in big business.