You may be interested in these two cheap Kindle versions of classic books.
The Two Towers: Being the Second Part of The Lord of the Rings by JRR Tolkein* is 3.99. The Fellowship of the Ring and The Return of the King are still ten bucks on the Kindle, tho.
2001: A Space Odyssey by Arthur Clarke* is 2.99.
As long as we are on the subject of cheap Kindle book, 366 Days in Abraham Lincoln’s Presidency: The Private, Political, and Military Decisions of America’s Greatest President by Stephen Wynalda* is two bucks. I’m not recommending it, I’ve not read it, but I am reading Lincoln, by David Herbert Donald, which I recommend, so it caught my eye.