Sale 1:

Sold for 30 keys?

Seller: https://backpack.tf/profiles/76561198194997179#!/compare/1598313600/1598400000

Buyer: https://backpack.tf/profiles/76561198220235207#!/compare/1597795200/1598313600

https://backpack.tf/item/8922866476

Keys most likely bought from some cash trading site.

30 keys

Sale 2:

Sold for 24 keys + some metal

Seller: https://backpack.tf/profiles/76561198182549022#!/compare/1596931200/1597017600

Buyer: https://backpack.tf/profiles/76561198879945899#!/compare/1596931200/1597017600

https://backpack.tf/item/7010571121

24 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/30658;5;u62

$49.99, June 8th

http://manic.tf/keyprice?at=2020-06-08&price=49.99 - $49.99 / $1.98 = 25.25 keys

Can't find history.

Rounds to 25 keys

Other Sales:

https://backpack.tf/item/8922866476 (#1 & #2)

https://backpack.tf/item/7863855253 (#3)

https://backpack.tf/item/7010571121 (#4 & #5)

https://backpack.tf/item/8838092173 - marketplace

https://backpack.tf/item/8262890027 - marketplace

#1

Untraceable

https://backpack.tf/profiles/76561198036591662#!/compare/1594512000/1596326400

https://backpack.tf/profiles/76561198165462530#!/compare/1594944000/1595635200

Possibly bulk

#2

Untraceable

https://backpack.tf/profiles/76561198165462530#!/compare/1596931200/1597017600

https://backpack.tf/profiles/76561198194997179#!/compare/1596844800/1597017600

#3

Untraceable

https://backpack.tf/profiles/76561198189585279#!/compare/1593129600/1594080000

https://backpack.tf/profiles/76561198144204837#!/compare/1592870400/1593475200

#4

Untraceable

https://backpack.tf/profiles/76561198315168987#!/compare/1593561600/1593907200

https://backpack.tf/profiles/76561198337734785#!/compare/1593820800/1593907200

#5

Untraceable

https://backpack.tf/profiles/76561198337734785#!/compare/1596758400/1596844800

https://backpack.tf/profiles/76561198410123158#!/compare/1596758400/1596844800

Only 23 keys match. Buy orders were higher at the time. https://bot.tf/stats/listings/Y795VPK8

Gambled afterwards.

Sellers:

https://marketplace.tf/items/tf2/30658;5;u62

https://backpack.tf/item/8262890027 - $59.99 (~33 keys)

https://backpack.tf/item/8838092173 - $80 (~44 keys)

https://i.imgur.com/Fp4TPUg.png

https://backpack.tf/item/7010571121 - ~37 keys

Sales at:

24

25

30

24 went to a buy order. Excluding 24.

Taking 25-30.