Need vs greed is easy to fix. If you Need the item and win, it automatically binds to you. If you greed the item. It won't bind to you. ie you cant sell it for any reasonable profit. No sense in pissing off all your friends now. If you want to make a point, set its vendor value to 1 credit when a need wins as well. Now the resale value is only good if you greed. Lying will cease unless you've really pissed off the guy your rolling against.