AdventuresQuests of Doom 4: Awakenings - 1st to 3rd level S&W adventure from Frog God, presumably converted from 5e. 19 pages, $7.99
Quests of Doom 4: A Little Knowledge -5h level adventure. $7.99 and 29 pages. By Tom Knauss, so presumably originally for 3rd edition.
SO7 Shrine of the Titans - Apparently a giant (er, the tall humanoid) adventure, actually, not titan, but still probably for higher levels. 14 pages, $2.50
The Folio 16.6 Pirate Lords of the Dark Sargasso - Side adventure for the Folio #16. $1.99 and 6 pages (yikes).
The Folio 16.6 The Ogre Magi of Jade Rock - Side adventure for the Folio #16. $1.99 and 12 pages.
RulesKeeps & Towers - Very short (6 page) guide for costs and such. Probably covered in may old editions anyway. 99 cents.
Most Monsters - I have to admit, this is a subject that hasn't really been covered. 10 pages, $1.99
MiscFriday Freebie Enhanced Map 2-16-18 - Looks like an underground shopping mall or something. $1 for enhanced version.
RPGPundit Presents #20; The City of Arkhome 2 - 21 pages, $2.99