Marc,

I sometimes collect $100's. It's tough, but I have 29 live, or recently live, $100 chips in my collection. I have 85 total. The others consist of older stuff that didn't cost $100 or more to acquire. I try to pick them up either when the casino first opens or right before it closes or changes racks. I only collect them from riverboats or indian casinos, except for the MGM fight chips.

My favorite $100 is pictured below.