D2 Shrine of the Kuo-Toa -Kuo-Toa always creeped me out. 12 pages, $4.99
PC1 Tall Tales of the Week Folk - I always disliked the "race as class' stuff in B/X and BECMI. However this I liked because it offered a viable way to play monsters, in this case, of the sylvan/faerie variety. 95 pages, $4.99
AdventuresCOA04: Guidebook to the Duchy of Valnwall - Print - The PDF of this sourcebook came out a while ago as PWYW, but you can now get it in print form for $14.99
Dungeons of Fel'Valashar - PWYW adventure for S&W. 16 pages
Peaks and Valleys: Among the Dwarves - Mentioned this, but it's really good. Be sure to check it out. PWYW.
Shrine of the Harvest Goddess - This is not an adventure, but just a location, and a system neutral one at that. But free and neat enough.
The Lost Temple of Forgotten Evil - This is dual statted, supposedly with OSR stats, but often that doesn't work out. Still, it might be decent. It's for 4th to 6th level and is $9.99 for 34 pages. Huge file size though, so might have a lot of art.
Grimoires for OSRIC - This appears to be more rules for making spells and spellbooks for OSRIC/1E. 14 pages, $3
The Dread Gazebo - I think everyone has heard the story about the gazebo (which I think is a bit misplaced, since if you read old pulp mags, "gazebo" was a slang term for a large criminal/thug), but here is a writeup and paper miniature for it. PWYW
Geomorphs Collections Caverns One - Need maps of caverns? I know I can't draw them, at least not digitally. $1.50
The Temple of Iron - Blank dungeon map. PWYW
Town Map 01 - Need a map of a town and the surrouding wilderness? Here's a very nice one from Time Hartin and Paratime Design. $3.99