To see the chip info on the Pioneer

http://cashcoinconnection.com/gamingchipsCalifornia/R/Rex/Jackson/Rex.html

There is only the $25.00 chip shown, but perhaps when you give this link to the seller, he may be more prone to let the whole thing go. He was obviously incorrect in his description, and the chips are not from the Horsershoe as he had advertised.

As Pete mentioned, be nice about it, and you'll get better results. It may have well been an honest mistake on the sellers part.