Well here's another nice deal this week: The Mutants and Masterminds Bundle of Holding. It's a good week to be a superhero rpg fan. Looks like 9 bucks gets you the core book and the GM's book, about 10 more (as I write this) gets you the threat report, the GM's kit, and the Emerald City Knights adventure path.
I have all of these already and that's a darn good deal. I paid more than $20 for them so the price is certainly right, and you could run a campaign for years with this stuff. If you're at all interested, it's worth a look.