Yeah, I can't really take these prices seriously. I've downloaded free book from iBooks that I've enjoyed, but their standard price for books is a joke.
The publishers don't have to print, ship or dispose of unwanted copies. All they have to do is some minor conversion work with software and then at best run some server farms, if that because it's more likely being done by Apple.
There is no paying for shelf space in book stores or any of the other normal logistical drag that forces book prices to be so high, including employing lots of people to handle all of those logistics.
Plus, the "long tail" or whatever that is called where they keep less popular books available for customers, which collectively brings in profitable cash, is ideal in a digital marketplace. It doesn't cost much to maintain a file on a server for decades as people purchase the book now and again.
It's absurd to be paying trade paperback prices ($12.99) for a book like Outliers by Malcolm Gladwell that came out in 2008. I don't see a problem with a book asking for premium prices for its first year, but after that it ought to instantly go into bargain-bin mode.
Once they bring prices down to around half the price of paperback, say $3-4 then I'll pay attention, otherwise I'll just enjoy catching up on the classics I missed in school.
Eventually the prices will drop, eventually the book stores will implode, we just have to have patience while the digital market gobbles up the print market.