I just got this one off Ebay a few weeks' ago for $6.87 + shipping. It arrived with a slight warp to it when it was described as flat- when I let him know, he refunded total cost and told me to keep it. Excellent seller! check his other items here:
http://www.ebay.com/sch/satisfashion101/m.html?_nkw=&_armrs=1&_from=&_ipg=25&_trksid=p3984.m1439.l2654

he has some very nice chips