An exiting addition to WoW in Mists of Pandaria is the Black Market Auction House, which just might be the biggest gold sink in the game. Located within the Tavern in the mists at the Veiled Stair, the Black Market is run by the mysterious Madam Goya.
The BMAH will allow players to bid on rare items that are normally not sold by NPCs, here the players can only buy, but not sell items. Bids start at 10,000 to 20,000 gold and there is no buyout option. The number of items up for auction at any one time will vary server to server, presumally based on the population.
The PvP realms will also be in for quite a ride as this area is not a safe zone and will most likely become a gankfest. The Black Market will allow players to purchase high-end gear, recipes, mounts and companions and will most likely spark bidding wars for the most desired items.
Most mount and companions will be Bind on Pickup, which will prevent wealthy WoW players from buying and reselling these items.
I am looking forward to getting some rare or discountinued items from the BMAH, and currently furiously grinding up gold for the expansion.