Couldn't edit my original post for some reason but  I've added some stuff to my stash and wantlist:

WANTLIST
Sycksyde - Lights From the Pumpkin EP
Sycksyde - Sometimes They Come Back
Sycksyde - Beyond the Crosses DVD
Sycksyde - One Nite EP
Sinister X - The PBM Years
Mr. Kiltcha - Portrait of a Serial Killer
Mr. Kiltcha - Fat Piece of Shit EP
Monsta Squad - Grindhouse Hip Hop
Icepick Willie - TaIes of Woe (2014 Sev'red Nervez reissue)
"Homemade Bob e. Nite releases" (What I mean by this is that in the early 2000s Bob e. Nite made a lot of 3SE cheapo budget releases at home and sold them on 3se.net. With the exception of the Beyond the Crosses DVD they were all Ridada thermal inkjet-printed CDr releases in slimline jewel cases with hand-cut cover art.)
Halfbreed - KontamiNATION cassette sampler
*Also any 3SE or 3SE-related stuff that's not listed in my stash I might be interested in.*

STASH
I've sold almost all of my PSY and RLP collection but here's what I've got left that might be of any collector's interest. All are CDs unless noted.

PSY & PSY-related:
ICP - Bassment Cuts (CD reissue)
ICP - A Carnival Xmas 1994 EP (will have to check if it's OG or reissue)
ICP - The Great Milenko (Hollywood Records, purple)
ICP - The Tempest sampler (sealed)
Twiztid - Mostasteless (OG 1998)
Twiztid - Mostasteless (OG 1999 comic book cover)
Twiztid - The Cryptic Collection (OG)
V-Sinizter - Hunting Season (OG)
Myzery - Para la Isla EP (has orange letters on the spine instead of red)
Ozzfest '98 Rock Pile Sampler (contains 2 ICP tracks)
Mancow - In the Kingdom of the Blind, the One Eyed Man is King (contains the ICP song, Down with the Cow)
Silver hatchetman charm (stamped 2000 on back)

RLP:
Esham - Boomin Words From Hell (OG)
Esham - Closed Casket (RLP/Warlock) X2 [one has blue letters on spine instead of green]
Natas - Doubelieveingod (OG)

Virus Independent:
Halfbreed/Bedlam - Virus Shit Sampler '99 cassette (signed by Prozak on the case; signed by Madness twice, once on the case and once on the cassette)
Halfbreed - Serial Killaz EP (OG)
Halfbreed - Serial Killaz EP (White Devil Productions reissue)
Halfbreed - KontamiNATION
Halfbreed - KontamiNATION (Hot Hits version)
Halfbreed - Rage of the Plague EP
Halfbreed - The End
Sol46 - Wormholes EP
Level Jumpers - The Red Pyramid

3rd Shift Entertainment:
Sycksyde - White Crosses (OG)
Sycksyde - White Crosses (Ressurect Edition) X2
Sycksyde - White Crosses (2006 reissue)
Sycksyde - Bloody Valentines single
Sinister X - Hell Hath No Fury (OG 2002 version, short-run of only 50 copies, signed as part of horrorcore.com preorder promotion)
Sinister X - Hell Hath No Fury ~The New Era~ (OG 2003 IIE pressing)
Sinister X - X-tras (OG red cover, short-run of 50 or less copies)
Sinister X - X-tras Vol. 2
Bob E. Nite - Code: Dead (OG)
Icepick Willie - Tales of Woe ("Bob e Nite homemade version" with alternate artwork, only a handful made, sold before the OG release)
Icepick Willie - Tales of Woe (OG)
Icepick Willie - Tales of Woe (2005 reissue)
Icepick Willie - Tales of Woe (2015 reissue)
Franky Frank - Kold Kasketz EP (signed, as far as I know they all are)

Other:
House of Krazees - The Night They Kame Home
Bedlam - Chemical Anthology
Bedlam - Shock Treatment (Collecter's Edition reissue)
Bedlam - Bedlamitez Rize
Bedlam - Wicked Stock Collector's Edition EP (OG)
Phantazm - Poltergeizt (OG pressing, signed as part of preorder promotion)
Dark Scriptures Chapter 1 compilation (OG IIE pressing, personalized by MC D)
L.U. Cipha - Witchez Bible (cassette)
Q Strange - Creation to ExeQtion (2004 reissue)
Komatoze - Attack of the Defaults
Komatoze - Cult Classics
Mad Insanity - Slaughterhouse (sealed cassette)
Poltageist - Katharsis
Poltageist - DSWTVWS
Nightmare on Drouillard compilation
Simken Heights - Smokebox (cassette, missing J-card)
Lavel - I'm a Menace single

I also have some old stickers, promo flats, flyers, etc. that I'll post after I go through them. I know I have some ICP, House of Krazees (2 member era) and Bedlam stuff.