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Amazon's excluded free books, but how about all the sharply discounted promotional e-books (under a dollar)? How about the collections of public domain e-books they repackage and sell for a buck or two?
I'd like to know the dollar amount of sales from e-books vs. paperbacks, and/or the average cost per unit sold for the e-books and the paperbacks. I bet if e-books outsold paperbacks by any other measure, we'd hear about it.
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