Fraser Speirs On eBook Pricing:

"I don't see ebooks as luxury items. I don't see how pricing ebooks above hardback prices is defensible when there has been no material to physically construct and ship. I particularly resent that pricing structure when so many ebooks that I purchase have obvious OCR errors or truly awful typography."

This drives me nuts as well. And the same thing happens with pricy audiobooks sometimes- I've had huge sections of chapters go missing because of some crappy tape to digital conversion mess-up.