Looking at the Goodman Gems Bundle of Holding I realize I have everything listed above except for the DM Campaign Tracker. If owning everything else isn't high praise I don't know what else I can say ;)
Adventurer! This Goodman Gems Bundle assembles the crown jewels of Goodman Games: The Dungeon Alphabet and other system-neutral supplements and sourcebooks for fantasy tabletop roleplaying games. Entertaining and inspirational, these key works of the Old School Revival enhance any fantasy campaign with new character backgrounds, locations, setting elements, monsters, a yearlong calendar, and two alphabetic compendia that help you rethink your OSR games at a fundamental level.
For just US$9.95 you get all four titles in our Starter Collection (retail value $37) as DRM-free .PDF ebooks, including The Adventurer's Almanac, a calendar of events to fill your campaign world's year; the handy DM Campaign Tracker; and two collections of tips and tricks for players and gamemasters, PC Pearls and GM Gems.
And if you pay more than the threshold price of $25.73, you'll level up and also get our entire Bonus Collection with six more titles worth an additional $61, including the latest edition of the famous Dungeon Alphabet, along with its sequel The Monster Alphabet; two collections of fantasy world settings, Points of Light and Points of Light 2: The Sunrise Sea; The Random Esoteric Creature Generator; and the popular treatise How to Write Adventure Modules That Don't Suck.