Unfortunately, Wayne, there is no standard market value on these chips. I got most of mine in England at the Portobello market, paying a few pence for each one. But in the 80's I would see the same chips being offered at shows ranging from $5 or so to in one case $150 for a rather ordinary round one. They are being offered frequently on eBay; some of them are rather interesting--heavy, with initials. You might track some of the auctions--see how they do and then contact the seller if you are buying. I sold a box of 100 two years ago for very little when I knew that I could get much more if I sold them individually but was happy to get them to a person who collects and deals them.