6 years!

https://backpack.tf/item/1203975519 ~ duped to fuckery, but the clean one hasn't moved in a decade

Sale #1:

https://backpack.tf/profiles/76561198109449429#!/compare/1718150400/1718409600 ~ sold with a Chiroptera Venenata Brain Bucket for a Arcana Tyrantium Helmet

https://backpack.tf/profiles/76561198285371555#!/compare/1718323200/1718409600

Mini brain bucket:

https://backpack.tf/suggestion/66a276b15f3442daef031c7b ~ 735

Mini tyrantium:

https://backpack.tf/suggestion/669ee1d237fcd978f50d4f83 ~ 1850

= 1115

Sale #2:

https://backpack.tf/profiles/76561198872222015#!/compare/1721606400/1721692800 ~ sold for a Bonzo The All-Gnawing Whoopee Cap (indate at 1350), added a Green Confetti Co-Pilot

https://backpack.tf/profiles/76561198310972287#!/compare/1721606400/1721692800

Mini co-pilot:

https://backpack.tf/suggestion/66a273c6cc46cc05310e8851 ~ 645

= 705

Sale #3:

https://backpack.tf/profiles/76561198124904264#!/compare/1718323200/1718496000 ~ looks bulky

Sale #4:

https://backpack.tf/profiles/76561198167149339#!/compare/1719273600/1719360000 ~ sold for a Stare From Beyond Hong Kong Cone, added Vintage Professional Killstreak Lugermorph (spelled exorcism) + 55 keys

https://backpack.tf/profiles/76561198310972287#!/compare/1719273600/1719360000

Mini HKC:

https://backpack.tf/suggestion/66a04c73dd1ada3a45087a24 ~ 1675

Mini Luger (Exorcism Spell):

https://backpack.tf/profiles/76561198310972287#!/compare/1720483200/1720569600 ~ 100 keys pure

https://backpack.tf/profiles/76561198051930593#!/compare/1720483200/1720569600

1675 - 155 = 1520

B/O was 1600 so this fits.

Sales @ 705, 1152, 1520

Considering buyers are 700, excluding 705. https://i.imgur.com/HAC6wp1.png , seller @ 1200 for 14 days, though for a high tier I don't think that is that long.

Either 1150-1500 or if the 1200 key seller stays unsold for say a month at 1200, then it may be a 1150 flat resugg.