E-book Sales Top All Other Book Format Types in February
According to the AAP's report on February 2011 sales, e-books saw triple-digit percentage growth, 202.3%, when compared to February of 2010. Audiobooks also increased, 36.7 percent compared to last February.
Another caveat: the AAP monthly and year-end sales report compiles data from 84 U.S. publishing houses representing major commercial, education, professional, scholarly and independents. Meanwhile, e-book data comes from only 16 publishing houses. The AAP admits its report "does not include all book and journal net sales, but provides what’s acknowledged as the best industry snapshot currently available."