US poker chips, that is sets you can buy at Wallgreens for $2.98 starting at double that.

Diamond mold, injection molded plastic (some sort of poly plastic is my guess)

But also James Bond chips for 2.50 pounds, for three.

Heck what's the exchange rate now?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=573&item=3211076310