E-book sales doubled in September, to $80.3 million, at the publishers that report results to the AAP. Sales in the print segments had a mixed performance with children’s/YA hardcover sales up 2.1% at reporting publishers, although children’s/YA paperback sales fell 14.6%. Sales of mass market paperback plunged in September, falling 54.3% at reporting houses. Trade paperback did much better with sales flat at reporting houses, while hardcover sales fell 18.1%. Sales from religious publishers (all formats), fell 6.3% at reporting publishers.

For the first nine months of 2011, e-book sales were up 137.9% at reporting publishers, to $727.7 million. Sales at all print trade segments were down in the nine months, though sales of religion products rose 6.6%.