Creates an auction for the item currently in the "auction item" slot.
Creates an auction for the item currently in the "auction item" slot. Has no effect unless an item has been placed in the Create Auction UI's "auction item" slot (see ClickAuctionSellItemButton()). With patch 3.3.3 the runTime arg was changed from minutes to an index and the stackSize/numStacks args were added for batch posting.