This is awesome for the consumer, absolutely. And it's only made possible by the recent DOJ trial that effectively allowed Amazon to set prices of ebooks (wholesale vs agency model). Recall that agency model, the publisher sets the price (the same as apps on the app store). But now that Amazon can set any price they want for ebooks (and take a loss on them if they want to, which they have done before), Amazon can do…
I think Charles Stross writings on ebooks is interesting and insightful. He should know: he's a tech-savvy best-selling author. (He hangs around here too: [1]) He wrote a couple of posts a year and a half ago, they still apply. In them, he explains how Amazon is making itself a monopoly, and that isn't good for anyone but them. What's been most informative to me is how tiny publishers actually are, and how little mon…
Also, selling an ebook via Amazon does not preclude you from selling it yourself or through other venues.