The Sale:

Sold to a bot for 2 keys + 34 ref (~2.55 keys)

https://backpack.tf/profiles/76561198312470057#!/compare/1710288000/1710460800

https://backpack.tf/profiles/76561199192893105#!/compare/1710201600/1710288000

https://backpack.tf/item/9149861592

= 2.55 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198414332721#!/compare/1697760000/1708214400

https://backpack.tf/profiles/76561199156289548#!/compare/1708128000/1708214400

https://backpack.tf/item/13624541413

Backpack buy or something

#2

https://backpack.tf/profiles/76561199043177646#!/compare/1704758400/1704844800

https://backpack.tf/profiles/76561199087603762#!/compare/1704412800/1704844800

https://backpack.tf/item/10727901550

Untraceable

#3

https://backpack.tf/profiles/76561199087603762#!/compare/1704844800/1705968000

https://backpack.tf/profiles/76561198275691313#!/compare/1705190400/1705449600

https://backpack.tf/item/10727901550

Untraceable, some random items match

#4

https://backpack.tf/profiles/76561198275691313#!/compare/1707091200/1707177600

https://backpack.tf/profiles/76561199242590809#!/compare/1706918400/1707091200

https://backpack.tf/item/10727901550

Untraceable

#5

https://backpack.tf/profiles/76561198850121720#!/compare/1709856000/1709942400

https://backpack.tf/profiles/76561199061291714#!/compare/1709856000/1709942400

https://backpack.tf/item/11637820531

Untraceable, most likely bulk. Gambled afterwards.

#6

https://backpack.tf/profiles/76561198363817391#!/compare/1707868800/1709769600

https://backpack.tf/profiles/76561199521837458#!/compare/1709942400/1710028800

https://backpack.tf/item/11546548554

Backpack buy or something

#7

https://backpack.tf/profiles/76561199521837458#!/compare/1710028800/1710201600

https://backpack.tf/profiles/76561199057187154#!/compare/1710115200/1710201600

https://backpack.tf/item/11546548554

Untraceable, some scrap matches.

#8

https://backpack.tf/profiles/76561199354611398#!/compare/1709596800/1709596800 - no compare available, probably a scammer anyway

https://backpack.tf/profiles/76561199518360841#!/compare/1709596800/1709683200

https://backpack.tf/item/11345687663

#9

https://backpack.tf/profiles/76561199518360841#!/compare/1709683200/1709769600

https://backpack.tf/profiles/76561198216241727#!/compare/1709683200/1709769600

https://backpack.tf/item/11345687663

Untraceable, bought off a potential scammer alt

#10

https://backpack.tf/profiles/76561199061291714#!/compare/1710028800/1710115200

https://backpack.tf/profiles/76561198135388328#!/compare/1710115200/1710201600

https://backpack.tf/item/6071471558

Untraceable, gambled prior

#11

https://backpack.tf/profiles/76561198135388328#!/compare/1710115200/1710201600

https://backpack.tf/profiles/76561199111292616#!/compare/1710115200/1710201600

https://gladiator.tf/sales?item=Screaming%20Tiger%20Taunt:%20Bad%20Pipes&at=2024-03-13T06:09:16.558Z - labelled as 2 keys + 35.22 ref

https://backpack.tf/item/6071471558

Untraceable, bot flip

#12

https://backpack.tf/item/6668123776 - unusualified, dumped onto bot without being scanned.

https://gladiator.tf/sales?item=Screaming%20Tiger%20Taunt:%20Bad%20Pipes&at=2024-01-31T09:42:43.986Z - labelled as 2 keys + 35.33 ref

https://backpack.tf/item/13970157985 - unusualified

https://backpack.tf/item/12050095138 - marketplace

https://backpack.tf/item/11637820531 - quicksell.store bots

https://backpack.tf/item/7233795565 - bot transfer

https://backpack.tf/item/6609404141 - mannco/marketplace

https://backpack.tf/item/4410033249 - marketplace

Sellers:

https://imgur.com/a/59uCAHt

https://backpack.tf/item/11546548554 - ~2.95 keys

https://backpack.tf/item/7233795565 - 3 keys

https://backpack.tf/item/13632652035 - ~3.5 keys

https://backpack.tf/item/11345687663 - ~3.5 keys

https://backpack.tf/item/9149861592 - ~3.5 keys

https://backpack.tf/item/6668123776 - 5 keys

https://backpack.tf/item/4410033249 - marketplace

https://backpack.tf/item/6609404141 - marketplace

https://backpack.tf/item/12050095138 - marketplace

https://backpack.tf/item/7422517147 - marketplace

Sale at 2.55 keys.

#11 & #12 support this price.

Taking 2.55 flat.