These three blog posts were interesting, informative and in the case of some of Mr. Konrath's post, entertaining. Worthwhile reading regardless for authors who self-publish.
Interesting blog piece from Ireland on pricing for eBooks:
Morris Rosenthal's look at book prices and book sales over the past ten years:
In his own unique style, eBook pioneer J.A. Konrath stirs the pot for those who think legacy publishing is a good deal. The comments are worth reading as well.