
According to the Association of American Publishers sales reached $113 million in 2008, up 68.4%.
The PDF they posted uses 2002 as a base year and includes additional data for 2003-2008.
The report shows an overall compounded 57.8% growth for ebooks from 2002-2008 while other categories either lost or grew very little.
In 2002 ebook sales were $7,337,000.00
In 2003 ebook sales were $19,772,000.00 up 169.5%
In 2004 ebook sales were $30,271,000.00 up 53.1%
In 2005 ebook sales were $43,832,000.00 up 44.8%
In 2006 ebook sales were $54,396,000.00 up 24.1%
In 2007 ebook sales were $67,233,000.00 up 23.6%
in 2008 ebook sales were $113,220,000.00 up 68.4%
Thought this info would interest some of you. I know it's still nothing compared to pbook sales dollars wise, but it's encouraging just the same.
The original posting of the report...
http://www.publishers.org/main/Indus...2008_Stats.htm
The PDF showing the stats...
http://www.publishers.org/documents/S12008Final.pdf
Related : IDPF Reports Wholesale US Ebook Revenues up 173%