Say player A offers to sell an item for $100. Later on, player B comes along and, without checking for the lowest price using a /price command, offers to buy the same item for $150. We have a deal. The item will be transferred to player B, and at least $100 will be transferred to player A. But what should happen to the remaining $50? Should it be: given to player A, returned to player B split between the two players ... and why? Would your answer be any different if player A were buying an item for a high price, and then player B offered to sell the item for a low price? I am less interested in how existing economy plugins handle this situation and more interested in what you think should happen.