The Complete Dinosaur, an edited volume.* Editors: Thomas H oltz, James Farlo, Bob Walters and Michael Brett, is currently on sale in kindle form, and it looks like a great value. I don’t know the book, but I looked through the sample and bought it.
In a completely different vein, Midnight in the Garden of Good and Evil* the classic best seller by John Berendt is also available cheap in kindle form.
The Spark of Life* by Frances Ashcroft covers electricity’s role in physiology, focusing on the human body.
And finally, What makes your brain happy and why you should do the opposite* by David DiSalvo, newly updated and revised.