Player based auction house which allows all players to post items for a price. What items you can and cant sell on the auction house? Id suggest not being able to sell items that could be abused in some way Is there a tax for using the auction house? I would say yes, just so that the auction house can't be abused when buying low and selling high Is there a minimum price set for certain items to make sure item economy doesn't bomb too much? It depends on the system itself. Do items fluctuate through supply and demand? Will under cutting, bidding and playing the auction house be a thing? Again depends on the system. A simple system would be just buying and selling at player chosen prices. Will the auction house be global or per city? Or both? Having a global auction house is simple, and allows for everyone to have an overview of the current market. Having per city would allow for players to transport cargo from a city where they bought low to a city where they sell high. (Highest prices being further away from the city the goods were bought in) Having per city could also allow for say a city in a level 10 area to have level 10 equipment in it. Meaning it would force players who need level 20 gear to go to level 20 cities to buy it or get it as a drop. Would also mean that high level players wouldn't be one shotting all the mobs new players are trying to fight in order to progress. I wouldn't mind either. Both have perks. What do you guys think!!