Would Love the Supply Demand feature as It would help prevent people farming the same loot over and over again. It would also create a cool gameplay aspect as people would probably have to switch guns that they would use as the supply could run out. However this could leave lonewolf players and even groups of two at a disadvantage as top groups could horde the best gear in their base and most people wouldn't be able to buy it at a good price if even buy it at all.