if they would bring back the function to buy singles from a stack (as an optional check box maybe), it would probably help the issue of undercutting. its' very hard for prices on stackable items to stabilize when the cost ranges are between buying a single item and buying freaking 99. as a crafter or something listing stacks, you'd have a steady trickle of income coming in from a stack listed rather then having it sit on the market forever and having to lower it more and more in cost because no one wants to buy 99 of what your selling and you don't have the space to sell it in smaller chunks.