I would enjoy this, but there would have to be some sort of restrictions. Restrictions could include things such as a much higher price, or the ability to buy only one item a week without visiting Xur's location, or possibly dropping at a low power level. They would have to have a reason for you to visit Xur if you could just buy his merchandise without finding his location, but I do like this concept. Thank you if you read through all of this. Have a good day.