Adventures & Settings
Avanar's Blade - For OD&D. Seems more like a quick encounter, as there isn't a map as near as I can tell. PWYW, 1 page.
The Hanging Tree - Another 1 page adventure for OD&D. PWYW
The King's Crow - Another 1 page adventure for OD&D. PWYW
The Roadside Shrine - Another 1 page adventure for OD&D. PWYW
The Sunken Tavern - Another 1 page adventure for OD&D. PWYW, Honestly, these things look like they could be a one paragraph encounter in a hex crawl.
RulesBX Options: Class Builder - This is interesting. Rules to make your own classes for BX and have them be balanced. Also some other stuff like a d6 skill system. Not sure why they included that, since that's White Box, with the d100% being introduced even before Greyhawk was published. I also don't get the appeal, a d6 is not granular enough. $9.99 and 78 pages.
Odysseys & Overlords Advanced Tools - Some add on rules for characters for the BFRPG based games. 24 pages, $2.95
Friday Enhanced Map 7-24-2020 - Smallish dungeon. $2