Barry,
Through ebay, I emailed Saharacoins re: the $1200 value on the Horseshoe chip. The response I received is posted elsewhere on the board...but stated that they had an outdated price book. I then sent this email:

"Have you notified the bidder(s) that you Unintentionally mis-stated the value of the chip? Have you amended the description? If it was unintentional, why do your slabbed chips carry the number from the Chiprack, but your unslabbed chip carries the price from an outdated price guide?"

Not a big surprise that I got no response!