The statistics, historical data and information about the numbers can be viewed at:
http://www.idpf.org/doc_library/industrystats.htm
Please keep in mind the following:
- This data represents United States revenues only
- This data represents only trade eBook sales via wholesale channels.
- Retail numbers may be as much as double the above figures due to industry wholesale discounts.
- This data represents only data submitted from approx. 12 to 15 trade publishers
- This data does not include library, educational or professional electronic sales
- The numbers reflect the wholesale revenues of publishers
- The definition used for reporting electronic book sales is "All books delivered electronically over the Internet OR to hand-held reading devices"
- The IDPF and AAP began collecting data together starting in Q1 2006
