I would add though that when trading say 5-$1 chips for 1-$5 chip that you should probably try and make the $1 chips different from different casinos etc. I know I would be dissappointed if I sent a $5 chip to someone to get 5 identical $1s in return. That would not be as much fun. Some though may not mind as much though since they could always just use the 4 extras to trade for others.