It's bad enough when an e-book costs me, at most, $1 less than the paperback. But!
I just went to buy The Time Traveler's Wife, and the paperback is less than the e-book by A LOT! Um, e-book reader companies? If you want me to buy your products, you can't charge me MORE money. I just saved 50% by buying the book instead of the digital file. Now, you might like to spend more money than you have to; perhaps you go into a restaurant and say, "Let me give you double what you are charging, because I like doing it." But I don't.
Also on the plus side: new book! Wheee!!