http://thebooksmugglers.com/2012/05/...e-results.html
Highlights from the reader portion (n=675) (starts about half way down - the earlier part discusses results from bloggers)
• Predominantly female audience (95%)
• Young (33 years old), international, educated, and with disposable income
• Overwhelmingly read ebooks (82%); purchase at least 4 books per month
• Feel ideal price for ebooks is $4.00-$6.99
• Do not care (and will not pay a higher price) for enhanced ebooks/enhanced content
• Likely to purchase limited edition/collectible hardcover editions
from everything I've read, this survey skews young, which may have been a function of where the survey was publicized - I'd certainly never heard about it until Dear Author published the links to the results.