***Neil, Can you give me an ISBN that you know is attached to multiple ebook formats?***
Pop into the bookstore section of our own website, Millie (
http://www.bewrite.net) and click on any book cover. You'll see that you're directed to a 'buy' page (it also includes book notes, free extract, author bio, reviews, etc) where one ISBN offers paperback and another a choice of ebook formats. Cheers. Neil