For the next 20 days, or so, there's some $400 worth of Dungeon Crawl Classics available across three tiers. The cheapest tier is less than a Dollar.
Parts of the Black Library can be found in Humble Bundle as $748 worth of Warhammer audiobooks are available across three tiers.
Wayward Rogues Publishing has an incredibly generous offer which has made them the best-seller of DriveThruRPG's Halloween sale so far.
There's now a chance to plunge deep into the darkness as there are two different offers for the game up in The Bundle of Holding.
$40 worth of Pathfinder / D&D 5e / Call of Cthulhu goodies are currently available in a $13 bundle from Hammerdog. It's The Dread House Bundle.
Count Dracula was contacted, a safe house in England built and transit arranged. The vampire then double-crossed the British, hunted down and slain in response. Or, so the Intelligence Department though; Dracula lives.
The Bundle of Holding is giving away a host of old Hero Magazines in PDF form, and some of them have never been available in this format before.
Modiphius has a new Star Trek Adventures 2d20 bundle live on DriveThruRPG which gets you three key books for nearly half price. The old Admirals bundle is still live for hardcore fans, though.
One of the most successful D&D authors of all time is R.A. Salvatore. His drow hero, Drizzt helped readers discover the frozen horrors of the north in Icewind Dale and the terrors of the Underdark.
There are three complete map packs in the Starter Collection, and they have a retail value of $35.