I don't know the answer to your question but I would also like to know. I bought one of these chips a couple of months ago when they weren't as commonly found on ebay. Since then they have been listed pretty regularly. After a few attempts to sell it for what I paid, I have decided to list it at $.99. The auction ends Sunday and it is at $11.00. . I am going to take a bath.

http://www.ebay.com/itm/170891296270?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

I have noticed that a club member has sold the majority of the chips on ebay. I won't mention his name here but a quick completed listing search will get you there.