IDPF has provided eBook sales statistics for June 2008. These statistics have recently been released from the Association of American Publishers (AAP) who collects these statistics in conjunction with the IDPF.
Trade eBook sales were $4,900,000 for June 2008, an 87.4% increase over June 2007. Calendar Year to Date Revenue is up 43%.Q2 of 2008 is the first quarter to top $11,000,000 in wholesale revenues among the 12 - 15 reporting Trade Publishers.
The statistics, historical data and information about the numbers can be viewed at:
http://www.idpf.org/doc_library/industrystats.htm