I'm thinking of setting up an auction with many of these on CDs or a flash drive and seeing how that goes. Auctioning off a few at a time instead of just one. I will re-list that one though.
Shipping and time involved in CDs and flash drives, and the customer still has to print it off, if they wish. Either way is fine with me. I like your subject matter and will be awaiting any of your future offers.