E-book sales statistics for
September 2008 have been released by the Association of American Publishers (AAP) via IDPF. The most recent data continues the upward trend in trade e-book sales with sales for September at $5.1 million, a 77.8% increase from September 2007. IDPF reports calendar year to date revenue is up 55.2% for the year. Note that these figures represent only a portion of the trade book publishers who have been willing to supply their data to IDPF.
