History 1: https://backpack.tf/item/9446545298

Most likely bulk:

https://backpack.tf/profiles/76561198850274253#!/compare/1609200000/1609286400

https://backpack.tf/profiles/76561198091502579#!/compare/1609286400/1609372800

Sold on Marketplace.tf: https://marketplace.tf/items/tf2/1106;5;u3045

January : $29.99/2.13=14.08 ~14 keys

History 2: https://backpack.tf/item/8368341462

10 keys + Unique Square Dance:

https://backpack.tf/profiles/76561198129197811#!/compare/1609977600/1610236800

https://backpack.tf/profiles/76561198052320061#!/compare/1609372800/1610064000

Square Dance was ~39.22-39.33 ref (~0.77 keys) https://gladiator.tf/listings/5ff671afc54e403139460fdc

10+0.77=10.77 keys, rounding to 11

History 3: https://backpack.tf/item/7314356162

0.44 ref matches:

https://backpack.tf/profiles/76561198423051068#!/compare/1611187200/1611273600

https://backpack.tf/profiles/76561198005032783#!/compare/1610409600/1611187200

Then listed on Mannco.Store at $15.95 (8.13 keys) https://mannco.store/item/29356

For some reason this is lower than buyers on Backpack.tf

History 4: https://backpack.tf/item/4547382468

a Civil Servant Mk.II Holy Mackerel (Factory New) matches, more must have been involved:

https://backpack.tf/profiles/76561198119723608#!/compare/1608768000/1610236800

https://backpack.tf/profiles/76561198072601817#!/compare/1609286400/1612310400

History 5: https://backpack.tf/item/3293140468

Dumped to Quicksell.Store:

https://backpack.tf/profiles/76561199000818082#!/compare/1611446400/1612483200

https://backpack.tf/profiles/76561199084784906#!/compare/1612483200/1612569600

Most likely instantly traded then instantly deposited to Marketplace.tf, then tradebacked again.

Compare doesn't have any matching keys though:

https://backpack.tf/profiles/76561199084784906#!/compare/1613779200/1613865600

Sales at 11 and 14

The seller on Mannco.Store at ~8 keys is way below buyers at over 9 on Backpack.tf and I don't think it should be used as counter evidence https://gladiator.tf/listings/60510af66a12b1d6433a9e34

Gonna go with 11-14 for now