Seems like there's a huge black market for emblems in the forums. Why not just make it official and make them available using the auction system? It would certainly make life easier for all!
Emblems may have a black market, but I think making them available to auction would result in a flood of emblems for sale. After a while, I think the price would drop so low that it'd be so easy for a lower level player to get their hands on all of the emblems with only the starting 1k Currants they get from completing the tutorial. They might not even have to actually play the game.