No, I'm saying the buyer pays 170 which is what the seller gets, yet the seller had 270 goods. That is where the 100 gets lost, to the game I would presume as I cant see it going anywhere else.
You see, if you let the supply fill the demand, and vice versa, then people would either pay for the higher Q or go without. This would force the producer/seller to be realistic about his production Q and selling price, and make the buyer determine how badly he wants the product. Self supply and common markets benefit. As things are now, Q and trade strategies in particular are worthless, is this a feature of the game that you wanted to eliminate, trade strats?