Somewhat curiously, there have been a couple of Gangbusters supplements, most notably Joe's Diner,
an adventure locale for $1.99 and Police Dispatches which is Pay What You Want
MA: Robots Among Us - From Jim Ward and Goodman Games comes this 20 page book on encounters with robots gone wild. $5.99
PA1 Vault of the Faceless Giants - Indian themed B/X adventure using their (Big Something Dragon Games) psionics rules, but easy to ignore the psionics stuff. Free for the time being, 16 pages.
The Folio #4 - 4th module in the Roslof Keep campaign. 36 pages, $5.99 and for 6th to 9th level characters
Whitebox One Shot Bundle #1 - Contains 3 adventures from Small Niche Games: Return of the Mad Hermit, Swamp Dungeon of the Bandit Lord, and Tower of Boon Companions. $4.99
WK 2: Curse of the Electric Kobold - Follow up to the WK1 Something of the Kobolds. For levels 2-4 and Sword & Wizardry. 31 pages, $6
Monstrous Miscellany #01 - 4 new monsters from James Mishler . 7 pages, 99 cents
The Golden Scroll of Justice - Wuxia supplement for Adventures Dark & Deep and presumably 1e. $9.95 and 114 pages.
1e/OSRIC Character Sheet - Free character sheet from Lloyd Metcalf who has done some recent adventures.
Dungeons in Blue - The Lava Flows One - Geomorphs. $3.49
Dungeons in Blue - The Lava Flows Two - Geomorphs. $3.49
Ships of the Galaxy: The Monarch Courier - Ship for White Star. 16 pages, $5