If the grand exchange stays then your wrong. If the grand exchange stays manipulation will still be taking place. Junk will still be coming into game from merches. People will still be raising their items. Gp will still be coming into the game just like always. Junk trading will take place just not like it used to be. Junk trading will be much different now, but if the grand exchange stays it won't be gone. Junk comes into the game from dumped buyouts. Buyouts take place from the grand exchange. Lower rares will crash, higher rares will raise.