E-book sales statistics for
May 2009 have been released by the Association of American Publishers (AAP) via IDPF. Trade e-book sales were $11.5 million for May 2009, a 196.6% increase over May 2008. IDPF reports calendar year to date revenue is up 166.7% for the year. Note that these figures represent the 12 to 15 trade book publishers who have been willing to supply their data to IDPF.
