Auction House please
Market ward,..etc are the AH's. Have you been playing the game? The search feature is practically perfect now. Like everyone has stated you just have to go to npc to buy your item.

..ps SE you should add some background voices to the wards..etc, you know like when you go to a crowed mall and you can hear voices but you can't pick up a distinct person, because the mall is just full of everyone talking. Not sure if you get what I'm saying, but that would add a certain ambiance to the various markets.