Also on my wishlist, The Balkans: Nationalism, War, and the Great Powers, 1804-2011 is $1.99 right now.
And The Right Stuff by Tom Wolfe is $2.99.
Finally, The Tusks of Extinction by Ray Nayler, which I just raced through, is $2.99 right now. It has some clumsy plot contrivances that make it feel a little unfinished, but it's the best (unofficial) Jurassic Park sequel I've read.