Essential Classic Fantasy RPG Collection is a collection of Old-School Essential books and Frog God products. The latter I'm not interested in so is the OSE by itself worth it?

Necrotic Gnome

NG-0014 OSE Classic Fantasy Rules Tome ($10 with 50% off)
NG-0017 OSE Advanced Fantasy Player's Tome ($15)
NG-0018 OSE Advanced Fantasy Referee's Tome ($15)
NG-0019 OSE Advanced Fantasy Reference Booklet (32pp compilation of tables) ($4)
NG-xxxx OSE Referee's Screen Inserts ($6)
NG-xxxx OSE Classic Fantasy Rogues Gallery 1 (21 NPCs) ($4)

NG-0020 OSE Adventure: The Incandescent Grottoes ($7.50)
NG-0021 OSE Adventure: Halls of the Blood King ($7.50)
NG-xxxx OSE Adventure: The Hole in the Oak ($7.50)
NG-xxxx OSE Adventure: Holy Mountain Shaker ($7.50)
NG-xxxx OSE Adventure: The Isle of the Plangent Mage ($7.50)

OSE Zine: Carcass Crawler #1 ($7.50)
OSE Zine: Carcass Crawler #2 ($7.50)

Beyond the Black Wall (adventure)
Catpocalypse Meow (adventure and optional rules)
Highfell (OSR mega-dungeon)
Paths of the Vanished (5E for levels 1-10)
Reaping at River's End (adventure)
Ruins of the Red Moon (solo adventure)
Stoneheart Valley (Pathfinder location with dungeon)
Sword of Air (sandbox campaign for levels 1-20)
Temple of Dagon (adventure)
Temple of Mercy (adventure)
The Weird That Befell Drigbolton (adventure)
Whisper's of the Serpent God (5E adventure)
Winter's Daughter (adventure)

Frog God Games

1975 (adventure for Swords & Wizardry)
The Black Spot (adventure)
Cat's Cradle (location)
Cat's Cradle and Eye of Itral Player Maps (add-on)
Dead Man's Chest (supplement)
Eye of Itral (adventure)
Fortune Hunters (NPCs)
Grand Duchy of Reme (location)
Let's Get Kraken (adventure)
The Lighthouse of Anan-Marath (adventure)
Rappan Athuk (Pathfinder/Swords & Wizardry)
Rappan Athuk: Players Guide
Rappan Athuk: Adventures in Zelkor's Ferry (location)
Rappan Athuk: Level 5D (dungeon)
Rappan Athuk: Swords & Wizardry Addendum (Pathfinder/Swords & Wizardry)
Rappan Athuk: Expansions Volume 1
Rocky Cape (adventure)
Sea King's Malice (adventure)
Sea King's Malice: Map Pack
Sea King's Malice: Token Pack (VTT tokens)
Terror at Wulf's Head (adventure)
The World of the Lost Lands (setting)

Pacesetter Games

Grave of the Green Flame (adventure)

Planet X

The Phylactery (zine)
The Phylactery 2 (zine)


So not much of the bundle is OSE and there is not that much OSE published anyways. $100 of OSE products for $25 is not bad. But now that I've written this up and read a few of the descriptions OSE is pretty much a B/X clone so desire to buy went way down since I have so much BECMI stuff.

Guess I'll skip this bundle.