Only sale for ANY of these in the last 8 months was the item sold to me today for 77 keys pure (most recent sale of other varients was 8 months ago). https://imgur.com/a/Wt9mKpb

The particular variant of the item that has actually been traded in the past: https://backpack.tf/item/2240615977

Sale to the guy before me was this + an anti freeze one-man army + 2 keys pure for a Stormy 13th Hour Pugilist's Protector which isn't really possible to price.

https://backpack.tf/profiles/76561198090804715#!/compare/1626393600/1626912000

Sale before that was for 78 pure.

https://backpack.tf/profiles/76561198205939253#!/compare/1626134400/1626220800

https://backpack.tf/profiles/76561198072441047#!/compare/1626134400/1626220800

Sale before that was for 85 pure https://backpack.tf/profiles/76561198062420532#!/compare/1625702400/1625788800

Overall this leads us 1 sale that's basically impossible to price unless the one-man army and puglists sell really fast, 1 sale for 77 pure, 1 sale for 78 pure, and 1 sale for 85 pure. As mentioned before, no other sales of this item are relevant and no other variant of this item was sold in the last 8 months. This leaves us with a range of 77-85 keys.

As suggested by "Blaze.xTH3RM4Lx":

since the person who paid 85 ended up selling it for a lower amount of 78 just a few days later it would be best to exclude that sale and go 77 - 78 here