https://backpack.tf/item/5196646509

https://backpack.tf/profiles/76561198155378170#!/compare/1658102400/1658188800

https://backpack.tf/profiles/76561198253093948#!/compare/1658102400/1658188800

https://gladiator.tf/time-machine?item=Starstorm%20Slumber%20Prehistoric%20Pullover&at=2022-07-18T10:26:23.000Z

Outdated sale for potentially 250 keys?

https://backpack.tf/item/5187941553

https://backpack.tf/profiles/76561198328282971#!/compare/1667779200/1667865600

https://backpack.tf/profiles/76561199005286760#!/compare/1667779200/1667865600

https://gladiator.tf/time-machine?item=Starstorm%20Slumber%20Prehistoric%20Pullover&at=2022-11-07T06:49:38.000Z

Rising Ritual Taunt: Flippin' Awesome (6)

https://gladiator.tf/sales?item=Rising%20Ritual%20Taunt:%20Flippin%27%20Awesome&at=2022-11-09T10:37:02.794Z

5-7 keys, ~6 keys

+

Spark of Smissmas Woolen Warmer (75)

https://backpack.tf/suggestion/62db506f72fe340e1c01105c

+

Polar Forecast Woolen Warmer (81)

https://backpack.tf/suggestion/636b9189965e986f0202de9b

+

Strange Professional Killstreak Australium Black Box (26)

https://gladiator.tf/sales?item=Strange%20Professional%20Killstreak%20Australium%20Black%20Box&at=2022-11-07T12:07:00.857Z

~26 keys

+

Pyroland Daydream Woolen Warmer (57)

https://backpack.tf/profiles/76561198453530349#!/compare/1657929600/1658016000

https://backpack.tf/profiles/76561199005286760#!/compare/1657929600/1658016000

https://gladiator.tf/time-machine?item=Pyroland%20Daydream%20Woolen%20Warmer&at=2022-07-17T12:25:46.000Z

Outdated sale at 57

+

Hospitable Festivity Woolen Warmer (110)

https://backpack.tf/suggestion/62f5a05a4cfd16cbec03cca2

=

6 + 75 + 81 + 26 + 57 + 110

=

355 keys

https://gladiator.tf/time-machine?item=Starstorm+Slumber+Prehistoric+Pullover&at=2022-11-08T09%3A05%3A00.000Z

Other seller was listed at 300 previously

Sale at 250 is outdated, but still fairly recent, and the lower listing suggests 355 flat may be a bit high.

Rounding to 250 - 360 keys.