Sale 1:

Bought off of scrap.tf with negligible metal for 8 keys

https://backpack.tf/profiles/76561198135388328#!/compare/1706572800/1706659200

https://backpack.tf/profiles/76561198238390988#!/compare/1705708800/1707177600

https://backpack.tf/item/13423330108

= 8 keys

Sale 2:

Sold for 6 keys

https://backpack.tf/profiles/76561199026390261#!/compare/1706659200/1706745600

https://backpack.tf/profiles/76561199069442401#!/compare/1706659200/1706832000

https://backpack.tf/item/13665890354

= 6 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198259665441#!/compare/1707696000/1707782400

https://backpack.tf/profiles/76561198306870587#!/compare/1707696000/1707782400

https://backpack.tf/item/14094350023

Untraceable

#2

https://backpack.tf/profiles/76561198119713244#!/compare/1704240000/1706486400

https://backpack.tf/profiles/76561198057412106#!/compare/1704153600/1704240000

https://backpack.tf/item/13665890354

Backpack purchase

#3

https://backpack.tf/profiles/76561198057412106#!/compare/1705622400/1705708800

https://backpack.tf/profiles/76561199026390261#!/compare/1705622400/1705708800

https://backpack.tf/item/13665890354

Bulk for keys

#4

https://backpack.tf/profiles/76561199057187154#!/compare/1703894400/1703980800

https://backpack.tf/profiles/76561198170773999#!/compare/1703894400/1704067200

https://backpack.tf/item/13624316064

Untraceable, only 3 keys match

#5

https://backpack.tf/profiles/76561198170773999#!/compare/1706227200/1706659200

https://backpack.tf/profiles/76561198002757046#!/compare/1706659200/1706745600

https://backpack.tf/item/13624316064

Untraceable

#6

https://backpack.tf/profiles/76561199004799979#!/compare/1702857600/1702944000

https://backpack.tf/profiles/76561198049096040#!/compare/1702857600/1702944000

https://backpack.tf/item/13022100057

Untraceable

#7

https://backpack.tf/profiles/76561198393664306#!/compare/1703030400/1703462400

https://backpack.tf/profiles/76561198850121720#!/compare/1703203200/1703289600

https://backpack.tf/item/12541742297

Untraceable, only 4 keys match.

#8

https://backpack.tf/profiles/76561199059800460#!/compare/1703721600/1703808000

https://backpack.tf/profiles/76561198311498888#!/compare/1703721600/1703808000

https://backpack.tf/item/12541742297

Untraceable

#9

https://backpack.tf/profiles/76561198311498888#!/compare/1703894400/1703980800

https://backpack.tf/profiles/76561198183165447#!/compare/1703894400/1703980800

https://backpack.tf/item/12541742297

Bulk for keys

#10

https://backpack.tf/profiles/76561199194373523#!/compare/1704758400/1704844800

https://backpack.tf/profiles/76561198086011812#!/compare/1704672000/1704758400

https://backpack.tf/item/12125831472

Bulk/untraceable

https://backpack.tf/item/13020047025 - mannco

https://backpack.tf/item/12986764257 - marketplace

https://backpack.tf/item/11153521979 - gambled

Sellers:

https://imgur.com/a/khxLLTx

https://backpack.tf/item/12532976101 - 10 keys

https://backpack.tf/item/13624316064 - 8.5 keys/marketplace

https://backpack.tf/item/12125831472 - marketplace

https://backpack.tf/item/13665890354 - marketplace

https://imgur.com/a/8cxnIQQ

https://stntrading.eu/item/tf2/Unusual+Screaming+Tiger+Taunt%3A+Shooter%27s+Stakeout

https://backpack.tf/item/14094350023 - ~5.9 keys (closer to 6 given current key prices)

Sales at:

6

8

Not gonna exclude 8 from an stn listing alone.

Taking 6-8 keys.