This is probably old news to some, but I only just discovered it, so I'm passing it along. Until the end of the year, Kenzer & Company is offering a 50% discount on most products purchased through their online store. That's a great deal, especially if you're looking to snag HackMaster Basic for a measly $9.99. There's a bunch of Aces & Eights stuff available at the discount, though, sadly, not the hardcover rulebook.
I am seriously considering snagging a couple of books myself, but I'll have to give it some more thought, since I've treated myself a lot lately.