E-book sales statistics for
April 2009 have been released by the Association of American Publishers (AAP) via IDPF. Trade e-book sales were $12.1 million for April 2009, a 228.3% increase over April 2008. IDPF reports calendar year to date revenue is up 154.8% for the year. Note that these figures represent the 13 trade book publishers who have been willing to supply their data to IDPF.
