The Complete Night's Black Agents & Dracula Dossier Bundle from Humble Bundle is $18 for

Already Own

PELG-N01 Night's Black Agents (2012)

PELG-N05 The Dracula Dossier: Director's Handbook (2015)
PELG-N06 Dracula Unredacted (2015) - Bram Stroker's Dracula novel with a lot of "redacted and unpublished" additions.
PELG-N07 The Dracula Dossier Deck (2016) - card deck with NPCs, Nodes, Locations, Objects, and Opponents
PELG-N08 EDOM Field Manual (2016)
PELG-N09 The EDOM Files (2016) - compendium of eight adventures
PELG-N10 The Hawkins Papers (2015) - handouts
PELG-N11 The Thrill of Dracula (2016) - review & analysis of Dracula tales and stories + adventure seeds

Don't Own

PELG-N02 The Zalozhniy Quartet (2012) - 4-mission campaign
PELG-N03 Double Tap: The Night's Black Agents Companion (2013)
PELG-N04 Dust and Mirrors - Music for Night's Black Agents (2013) - MP3 album

PELG-N12 The Dubai Reckoning (2016) - 25-page adventure
PELG-N13 Looking Glass: Hong Kong (2017) - generic supplement usable with various Pelgrane RPGs
PELG-N14 The Persephone Extraction (2018) - 5-adventure campaign
PELG-N15 Night's Black Agents Director's Screen & Resource Guide (2019)
PELG-N16 The Dracula Vector (2020) - 29 page 2-session adventure
PELG-N17 Find Forever - one-shot adventure

GUMSHOE Zoom: Mind Control (2014) - 12-page article from Ken Writes About Stuff monthly series
Lilith (2014) - 9-page article from Ken Writes About Stuff monthly series

Free Stuff

The Dracula Dossier: Cuttings and New Additions - 65 pages of extras
The Dracula Dossier: Orchestral Theme Music - bonus from KS
Perveniet Calix (2015) - 7-page bonus item from Dracula Dossier KS

These can be downloaded from the Pelgrane's Dracula Dossier Resources.

I bought the Dracula Dossier Bundle which is all of the Already Own items. The rest is still a good buy for $18.