Well, just to clarify my post above, I don't care what you do and don't mean it as a moral judgement -- it's simply that it is not only illegal, but an increasingly risky market. Not passing off replicas as genuine will not protect you -- on the contrary, all that does is reduce your criminal charges by 1/2 (it's illegal to sell them at all, in any context, and also illegal to misrepresent them as genuine. So if you're not passing them off as real, then you're down to just one crime, but it's still a crime.)
And yes, there is good money in it. There's good money in all kinds of stuff, some of it illegal, some of it illegal but "you can probably get away with it." In my opinion, it's faulty logic to try to build a business around what you think you can get away with doing -- again, not a moral judgment at all, just business advice.