If you haven't heard, the Department of Justice is accusing publishers of collusion in ebook pricing. This is going to be interesting to watch unfold and as a Kindle owner, I'm glad they are looking into this.
I wanted to pre-order JKRowling's grown up book The Casual Vacancy, but the Amazon ebook price set by the publisher is $19.99! The print is $21.00. I'm going to have to pass on the ebook version.