I’m all for more expensive ebooks. The 99 cent song has essentially turned the music business into a freak out fest and the publishing industry is even less prepare for the volcano that’s about to erupt right in the middle of their industry.
I’d say $12.99 is a good price for an ebook. At that price Apple gets $4 and the publisher gets about $8. This, in turn, gets the author 2 cents on a good day.