I have an idea for a new auction house to be added. It would be a black market house where you have to be maximum level, and prove your worthiness to the shopkeepers in a 4v1 solo fight against him and his minions. As a reward for this, you get access to the black market, which would be a teleport free zone that players could sell almost any non-auctionable items to them for a bit of gold, but they mark up the prices a lot so there would be less of an incentive to go there. Crowns items, of course, couldn't be sold, but almost any other item could be sold. Just an idea to improve the game.