I'm selling an item I crafted for 25k. Other items with similar material costs are selling for 10k. If someone undercuts me by 1g, I can return the favor - whatever, nbd.

If there were a listing fee, I'd probably just drop my price to 10k - which is still profitable - and hope the undercutter moves on to making and selling something different, and I can go back to selling at 25k.



IMO listing fee = MUCH GREATER undercutting