Nice features. The rollovers are very convenient way to view the chips.

Two minor problems:
On the Tahoe/Reno page, the rollover for the 50c Riverside chip brings up the wrong picture.

When a description wraps to a 2nd line, the price on the next chip is not pushed down a line as well. So the chip titles & prices don't line up. Pretty minor, but thought I'd mention it. Widening the chip title column a bit is probably the way to fix it.