Well, it was no surprise that digitals have eaten into paperback sales, but the extent was not expected
Jason Boog at GalleyCat reports that according to the Association of American Publishers (AAP) net sales revenue report for December (chart embedded above), adult mass market paperback sales dropped 40.9 percent compared to the same period the year before. Overall trade sales declined almost three percent, dipping from $561.3 million to $545.1 million.
During the year to date, overall trade book sales saw a four percent drop and mass market paperback sales declined nearly 36 percent for the year. While eBook sales increased 117 percent last year, they still have not closed the gap with declining print sales.