I'm putting this thread out there for a place to put any new deals on where to get some cool stuff.
eBay auctions, books sales, etc.
To start off,
DriveThruRPG and GDW recently got together and released issues #25 through #77 (the final issue) of GDW's
Challenge magazine from back in the day. They're being sold at $2 bucks a pop (although the index and issue #49 are free), and you can find a list of them all
here.
For you younglings out there,
Challenge was a magazine that included fiction and rules for games like Shadowrun, BattleTech, Traveller, Cyberpunk and others. To give you an idea, they carried a lot of Stackpole short stories for Shadowrun as well as some great articles by other notables.