I sat next to Jay at the Arcadia Show today and had the chance to use his latest update of his ebay sales tracking book which details the final cost of chip auctions on ebay. Along with the final price it will tell when it ended so you can compare sales figures by date. It was really useful to me and I wanted to thank Jay for his work. Printed out, it is about 1.5" thick so I can only imagine the work that went into it. If you don't already pay to get the book, you should. It saved me a bundle today on chips that I thought were cheaper on ebay and it helped to confirm a few. It also confirmed a few that had never been on ebay so Thanks Jay!
Mike