So there is a big sale on gaming materials in honor of GM's Day over at DriveThruRPG.
Considering that I run GURPS, and play (but don't run) Swords & Wizardry, and considering my interest in original 70s/80s era games . . . what do I need to look into here?
I'm not sure I'm going to get anything, but considering the sale, I feel like I should at least browse around. What's a good item or two that's being sold for a good discount for GM's Day?