Why not

Item 1

https://backpack.tf/item/3704323038

Sale 1

https://backpack.tf/profiles/76561198819747735#!/compare/1617840000/1618012800

https://backpack.tf/profiles/76561198116002030#!/compare/1617926400/1618012800

Sold for:

Green Energy Virtual Viewfinder - https://backpack.tf/suggestion/6099596bda873e30e615324e - 1950 keys

Stormy 13th Hour Backwards Ballcap - https://backpack.tf/suggestion/60995c9b90537c2149186a70 - 325 keys

DUPED It's A Secret To Everybody Honcho's Headgear - https://pastebin.com/YUgzDWsW - 200 keys as a mini

Stormy 13th Hour Specialized Killstreak Bloke's Bucket Hat - https://backpack.tf/suggestion/6099675ff661547c6e13e103 - 210 keys

Haunted Ghosts Das Hazmattenhatten - https://backpack.tf/suggestion/6006d7cbfa910f353f2f68d3 - 116 keys was outdated by 8 days

Chiroptera Venenata Physician's Protector - no mini, 70 key buyer

Purple Energy Horrific Headsplitter - https://backpack.tf/suggestion/6076fe7af069c12e0966f5e1 - 85.5 keys

270 keys

1950 + 325 + 200 + 210 + 116 + 70 + 85.5 + 270 = 3226.5 keys

https://gladiator.tf/listings/60720767d74659a269227a37 - buyout 4000 keys

Considering I've taken buyers on the CV Physician's, I'll round up to 3250 keys here

It's a bit scuffed but I think the undervalued items balance out the overvalued items here

Running with this 3250 flat

New sale!

https://backpack.tf/profiles/76561198189534714#!/compare/1621555200/1621641600

https://backpack.tf/profiles/76561197982127154#!/compare/1621555200/1621641600

Sold for:

Burning Flames Pyromancer's Mask - haven't suggested it yet but Ultralow says he paid 525

Purple Energy Master's Yellow Belt - https://backpack.tf/suggestion/60aa8e40b719b2109d7028c9 - 380 keys

Knifestorm Tyrant's Helm - https://backpack.tf/suggestion/60aa92c95e1ad168237d8ae1 - 830 keys

Strange Cloudy Moon Villain's Veil - https://backpack.tf/suggestion/60468f79d35c276240624a9e - 750 is just about outdated but it's the only other recent sale

Spectral Swirl Taunt: Zoomin' Broom - https://backpack.tf/suggestion/60aa90a97b24c226e9213de7 - 29 keys

525 + 380 + 830 + 750 + 29 = 2514 keys

https://gladiator.tf/listings/60a7eac9b6353c6837c87d42 - 4500 key buyout

So I could range it 2500 - 3250

Closing, the bulk trade for IASTE VVF values this VVF dirt cheap