Good thread, died early. Maybe it can be revived. For me book values definitely matter. If a coin is underachieving in the market place or sellers are under-listing to move inventory I simply don't list that item. That is for me one of the beauties of coins, as a commodity, they can be held indefinitely cost-free. There's a lot of market data to analyze on every coin and for me all of it factors. On the Ebay/Paypal cut . . . I crunched the numbers on sales from $5 to $100 and to my recollection the net loss was in a range from 12%-19% off list which included shipping.