If you are not aware of it the casinos generally don't want you to leave the roulette table with the chips. This is because there is no stated value on each chip but it can change with each player. The table minimums also change depending on how busy the tables are. If you collect roulettes the best way to do it is to get a full stack of 20 chips. The only problem is that you end up with lots of duplicates. I generally stick 5 in my pocket and just leave quickly after I cash out. They have only chased after me twice - both times was at Ballys Tunica.