If players who are on sale at auction, were generated by only live users, to all wouldn't suffice! Therefore there are "teams" at which it is impossible to look, but thus sell players. Simply on one servers of such "teams" there is a lot of, and on others - it isn't enough. But such situation is favorable to developers! When players buy for 50-100 tokens! It is what inflow of cash!
That else irritates that it is impossible to buy from the friend players through a transfer. Probably it is impossible to throw "smuggling" of players from free servers on servers with the strong competition.