Jerry,
I guess you are talking about my roulette auctions. I always say their are only 300 chips made. Unlike LE's, where you know the exact number of chips, I have no idea how many roulette chips are actually ordered. As you stated the roulette tables only have 15 rows of chips stacked 20 high. Many places that have been harvested will only have about 13 rows on the game. It is hard to say how many chips their really are. At a recent trip to the Hard Rock I noticed that one wheel was down to 160 chips. I have about 10 roulette sets on Ebay right now at low opening bids.