That would help somewhat, but it would take some of the fun away...like seeing a good deal on a hat and buying it for a friend, for example, and giving it to him/her when he/she gets online.
And buying/selling hats was the best way to make money for the longest time, buy low, sell high as they say. a forced limit would take that away, unless you would trade your ONLY one of a hat, and that would just drive the prices up more
