Item 1:

https://backpack.tf/item/11838702021

Sale 1:

https://backpack.tf/profiles/76561198050959318#!/compare/1768953600/1769212800

https://backpack.tf/profiles/76561198453530349#!/compare/1768953600/1769040000

idk

Sale 2:

https://backpack.tf/profiles/76561198050959318#!/compare/1771545600/1771977600

https://backpack.tf/profiles/76561199697394581#!/compare/1771891200/1771977600

idk

Item 2:

https://backpack.tf/item/10667492406

Sale 3:

https://backpack.tf/profiles/76561198188540417#!/compare/1771027200/1771113600

https://backpack.tf/profiles/76561198311498888#!/compare/1770940800/1771113600

some kinda dump idk anyways

Sale 4:

https://marketplace.tf/items/tf2/30093;5;u8

https://marketplace.tf/items/tf2/5021;6

56$ on 14th of February

56/1.9=~29 keys, but it got redumped the same day seemingly, so I won't be using it.

Item 3:

https://backpack.tf/item/8341777268

Sale 5:

https://marketplace.tf/items/tf2/30093;5;u8

https://marketplace.tf/items/tf2/5021;6

58$ on the 3rd of March

58/1.92=~30 keys

I'm not sure about the history on this one, could've skipped someone as it went to quicksell.store bot, dunno, mods will tell what2do, but for now I'm going with 30 flat.