I was ordering an item on Amazon, and in doing so it occurred to me that I could probably easily afford to buy everything on my cough extensive cough wish list that was selling used for under $2. So I just did. And the total order was under $200, $50 of which was the stuff I had to buy, anyway. It was 25 books, altogether, and some of them ones I've been wanting to read for a while.
It kind of sucks that Amazon has dropped the bottom out of the used book market, because I have a huge stack of books I want to sell and seem unable to do for any reasonable amount, but at the same time, this is definitely a boon on the purchase side of things.