This is a really big sale from lots of small publishers. Too much stuff to wade through so I'll check for items reviewed in Fear of the Black Dragon podcast, which reviews OSR and old-era adventures.

Slumbering Ursine Dunes ($3.60, 60% off) - OSR D&D caravan adventure
Fever Swamp ($7.20, 40% off) - OSR D&D swamp adventure
The Gardens of Ynn ($3, 40% off) - OSR adventure set in an interdimensional garden
Statues ($3, 40% off) - OSR AD&D political adventure set in a Roman-era city
The Wizardarium of Calabraxis ($1.50, 25% off) - DCC adventure
Sacrebleu ($0.30, 60% off) - OSR adventure set on an island of goblins and WW1-era weaponry
Times That Fry Men's Souls ($3, 40% off) - OSR campaign in demented Colonial NY and NJ
Mortzengersturm, The Mad Manticore of the Prismatic Peak ($3.20, 60% off) - 5E adventure
Wet Grandpa ($6, 40% off) - system neutral/d20 agnostic adventure
The Bruja, The Beast and The Barrow ($0.80, 20% off) - 4 page OSR mini-adventure

The Corruption of Pelursh ($5) - system-agnostic dungeon, not a DTRPG product but might as well buy it now or I'll forget to ever buy it.