Interesting nugget from publisher Penguin's second quarter results picked up by Robert Andrews at paidContent:
Penguin’s global e-book sales grew 128 percent over the last year to represent 14 percent of the publisher’s total revenue. Penguin’s sales growth is slower than the 160.1 percent annual growth the American Association of Publishers reported for consumer e-books for the first five months of this year.
-paidContent, July 29, 2011
Perhaps the agency pricing is sacrificing ebook sales, after all.