I own a few of them and it seems like the smaller denoms (25 and 100) go for around $25 each, these days. A lot of them sit on Ebay as "but it now's", and will only sell when up for auction and collectors can buy them for discounted prices. I guess that is like most chips these days.

The larger denoms increase in price exponentially, from what I have seen. A 1,000 NCV WSOP Rio Main Event chip might go for around $80 or so. I bought an orange WSOP Main Event Chip last year for $100, and was very happy at that price. I've seen them sell for much more.

Nice group you have, and I would think you would get much better prices if you listed them individually. Good luck..