Modern Library is currently having a sale on e-books on Amazon. There are over 350 titles on sale for only $2.99 each. I am not sure how long the lasts, so you may want to act quickly on these. There are lots of history, philosophy and literature titles. You can see the list here.
I am going in to start going through the list. If you don’t hear from me again, send help! This is the kind of sale a Liberal Arts major like me just can’t resist. 🙂