I don't have a problem with ebooks being more expensive. For me, they are much more useful and thus more valuable. I'm willing to pay more for an electronic copy and so are a lot of people. In the end, that's what determines the price. The cost of the raw materials only establishes a floor beyond which the publishers will lose money. It has very little to do with the fair price.
Every time I go into a Barnes and Noble store, it kills me that I can't buy ebooks for my Kindle there. The ideal bookstore for me would be one that I can browse the inventory, read part of the book, then take the book or a card to a register where they will send an ebook to my device or put it on a memory stick. Right now, I go into the store, find stuff I'm interested in, then buy it from Amazon. There's basically no way for me to support my local book stores because they don't sell anything I want.