"This price was set by the publisher" is Amazon’s way of saying "Yeah, we know this is stupid. Don’t blame us."
But not only do you get to pay more for the Kindle version, but they’ve also disabled Text-To-Speech. Not that there’s an audio-version, of course, nor is there likely to be one.
But blind people don’t care about books anyway, so why should they be able to hear a fairly terrible computer voice read a book that they’re interested in when it might interfere with the publishing company’s possibility of making more money later on by making an audio version which would be vastly superior to the text-to-speech voice that the Kindle uses?
Heckuva job, Simon and Schuster.
(I’m not linking to the book itself because I’m not giving them any free publicity from their bad behavior. If the price drops to equal or less than the paperback and text-to-speech is re-enabled, maybe I will.)