Hi
I am in the market for a relatively new version of one of the well known and well respected Ebooks that are available from well respected authors. Does anybody know if their copyright licenses allow them to be resold to another owner? I have searched on Ebay but didn't find anything for sale that I recognized as being an authoritave ebook.

I want to buy one but wondered if its possible to buy it second hand in the same way you can buy a Vbulletin second user or microsoft office 2003 or a music CD second hand?