I just posted a thread in which an author talks about eBook marketing and one of the things he discusses is how Harper Collins is going to to sell eBooks in book stores. They are selling 3 by 5 cards with the cover and back cover of the book with a code that you can download the book. It lets the book store set the price they want for the card and make a profit on the sale.
https://www.mobileread.com/forums/sho...983#post647983