Two of which I plan on using for Halloween Bingo. They're both books I'd been wanting to read anyway, so if I end up not having the square I have them earmarked for, it's no biggie.
This is the one I don't have on a square, but it'd work for Romantic Suspense for sure.
For the Creepy Carnivals square.
For the Cryptozoologist square.
Total for all three books was less than $10. :D