i understand, what i mean is how do you link the retainer with the RMT account? and how can you be sure its not another player who buys your gear and its monopolizing the market? a player with a lot of gil can do this.
lets say there are x20 hats for 4k each, if i got the money i can buy them all and resell them for 20k, making 20k hats the only option. you dont have to be a RMT to do this, its just Market hussle.