Re-suggestion from https://backpack.tf/suggestion/61107c1e0a4ff000bd094858#comment-61108cc98016503685422ecb.

Thanks to Mr.Biggums for helping find other sales.

1:

https://backpack.tf/profiles/76561198046353418#!/compare/1628380800/1628467200

https://backpack.tf/profiles/76561198007361467#!/compare/1628294400/1628380800

Payed 36 keys. Familiar fez is from SCM.

2:

https://backpack.tf/profiles/76561198062307439#!/compare/1624492800/1626998400

Looks like 35 keys.

3:

https://backpack.tf/profiles/76561198124196057#!/compare/1627689600/1627776000

Sold for 24 keys + vintage lugermorph (about 11.5 keys) Total 35.5 keys.

4:

https://backpack.tf/profiles/76561198087170332#!/compare/1626566400/1626652800

https://backpack.tf/profiles/76561198297452359#!/compare/1626566400/1626652800

Untraceable

5:

https://backpack.tf/profiles/76561198297452359#!/compare/1626566400/1626652800

https://backpack.tf/profiles/76561198142864294#!/compare/1626566400/1626652800

Difficult to tell... looks like 17 keys + stormy storm coup d'isaster (9) & steaming pugilist's protector (9). Both very outdated prices, also it appears both hats were quicksold.

6:

https://backpack.tf/profiles/76561198142864294#!/compare/1626652800/1626739200

https://backpack.tf/profiles/76561198124196057#!/compare/1626652800/1626739200

Difficult to say as well... looks like: 4 keys, yeti punch unusualifier, BMOC, kill a watt jolly jingler (histories match)[https://backpack.tf/item/9940953677] + a whole bunch of low value items.

SALES AT:

36

35.5

35

35-ish (old hats)

There's a lot of untracable sales in https://backpack.tf/item/4176855887. I'm not certain what to make of this but the price is 2 years out of date, hence I believe this is a sound suggestion. Going with 35-36 keys.

Not sure what to value sale #6