As long as the GM sale is going on, I'll be mentioning some of my favorites that are on sale. Today I'm looking at the following:
Red Tide: Campaign Sourcebook and Sandbox Toolkit - A Labyrinth Lord sourcebook with an asiatic theme, my favorite part is the random tables, from Room Dressing to NPC generation. There's a lot of meat here for 5.99
Lesserton & Mor - another sandbox campaign setting for Labyrinth Lord (but as we all know, easily convertible to other OSR systems), this one gives you both the town for your party's base and the nearby ruins of Mor. 12 bucks.
The Grinding Gear - probably the best adventure that James Raggi has written to date. The Grinding Gear back in December of '09, and I summed it up as a (barely) survivable Tomb of Horrors. It still hold up as one of Raggi's best. Heck, one of the OSR's best adventures. 4.50