Sale 1:

Sold for 40 keys

https://backpack.tf/profiles/76561198882886230#!/compare/1730505600/1730592000

https://backpack.tf/profiles/76561198056176130#!/compare/1730246400/1730764800

https://backpack.tf/item/12769334467

= 40 keys

Sale 2:

Sold for 35 keys

https://backpack.tf/profiles/76561198233544600#!/compare/1730419200/1730678400

https://backpack.tf/profiles/76561198008113369#!/compare/1730592000/1730678400

https://backpack.tf/item/14403014826

= 35 keys

Sale 3:

Re-sold instantly for 35 keys

https://backpack.tf/profiles/76561198008113369#!/compare/1730592000/1730678400

https://backpack.tf/profiles/76561198063478666#!/compare/1730592000/1730678400

https://backpack.tf/item/14403014826

= 35 keys

Sale 4:

Sold for 27 keys

https://backpack.tf/profiles/76561198970722371#!/compare/1728604800/1728691200

https://backpack.tf/profiles/76561198068516964#!/compare/1728432000/1728777600

https://backpack.tf/item/10536685843

= 27 keys

Sale 5:

Sold for 21 keys

https://backpack.tf/profiles/76561198448443559#!/compare/1729814400/1729900800

https://backpack.tf/profiles/76561198882886230#!/compare/1729814400/1729900800

https://backpack.tf/item/12769334467

= 21 keys

Other Sales:

#1

https://backpack.tf/profiles/76561199026390261#!/compare/1732233600/1732320000

https://backpack.tf/profiles/76561199111648936#!/compare/1732233600/1732320000

https://backpack.tf/item/15111080964

Untraceable

#2

https://backpack.tf/profiles/76561198316831771#!/compare/1729814400/1729900800

https://backpack.tf/profiles/76561198063472618#!/compare/1729814400/1729900800

https://backpack.tf/item/15063167487

Untraceable

#3

https://backpack.tf/profiles/76561198238289346#!/compare/1730764800/1730851200

https://backpack.tf/profiles/76561198021055079#!/compare/1730764800/1730851200

https://backpack.tf/item/14998043737

Bulk for Purple Energy Aviator Assassin

#4

https://backpack.tf/profiles/76561198298522216#!/compare/1730419200/1730937600

https://backpack.tf/profiles/76561198816106263#!/compare/1730419200/1730937600

https://backpack.tf/item/14917615860

Untraceable/Bulk

#5

https://backpack.tf/profiles/76561198219027272#!/compare/1731801600/1731888000

https://backpack.tf/profiles/76561198059978313#!/compare/1731542400/1731974400

https://backpack.tf/item/13531825687

Untraceable

#6

https://backpack.tf/profiles/76561198259355317#!/compare/1729641600/1729987200

https://backpack.tf/profiles/76561198219027272#!/compare/1731628800/1731715200

https://backpack.tf/item/13531825687

Untraceable

#7

https://backpack.tf/profiles/76561198081175830#!/compare/1730332800/1730419200

https://backpack.tf/profiles/76561198114402400#!/compare/1729728000/1730419200

https://backpack.tf/item/7450375120

Bulk for Orbiting Fire Bonk Boy

Sellers:

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

https://backpack.tf/item/14998043737 - 40 keys

https://backpack.tf/item/15111080964 - 40 keys

https://backpack.tf/item/15059163076 - 40 keys

https://backpack.tf/item/15063167487 - 40 keys

https://backpack.tf/item/7450375120 - 50 keys

Sales at:

21

27

35 (2x)

40

Buyers at 25 and 26, excluding 21.

Taking 27-40 keys.