I read they will have two auction houses, one being in game currency, and the other real world currency. Not a fan of the real world currency one as it means people don't have to work as hard in game for the items. Mostly it will be a bunch of kids getting their parents to buy them the good items they don't have the patience to get.
Oh well I, like many others I'm sure, along with my buddy plan to at least make the cost of the game back in the real world auction house ^_^