My ultimate goal is to purchase a computer service franchise. To get there, I need money. I have writen a small how-to book that I would like to sell on ebay as an "ebook." I can secure the document in Adobe, but what I cannot prevent (as far as I know) is keeping people from buying 1 copy, and reselling the same PDF file as their own. Yes, I can copyright the work, but that will not stop people from doing it. The only thing I can think of is to have a POD (print on demand) publisher prepare the ebook and somehow link a auto-renewing listing on ebay (if there is such a thing) to the publishers site for product fulfilment.