Quote Originally Posted by Darkmoonrise View Post
Something which would help, but not really solve the problem is to deduce the tax when putting an item on sale and not when it is sold. Let's say you want to sell an item 100k and the tax is at 5%. When you put the item on sale, you pay 5k. And when it is sold you get 100k. If you change the price, you pay the 5% again on the new price. This will prevent undercutting a little bit because, well, you loose money each time you do it.
What about when the tax is reduced to 0%? There's no tax to be collected. Botters probably would have little issue with leveling their market characters through the MSQ far enough to unlock the reduced tax markets if they could keep changing their list price at no charge.

Better just to make it a listing fee that's separate from the tax and non-refundable. Even 1% would probably be enough to deter the majority of repeat undercutting (someone might relist if their item still hadn't sold after a few days). Players would still have incentive to move their retainers to the 0% cities to avoid the additional 3 or 5% when the items sells.