Item 1: https://backpack.tf/item/15995510282

Ignoring sales 1, 2, 3 and 4 since scammer ALTs were involved

Sale 5:

https://backpack.tf/profiles/76561199084784906#!/compare/1783036800/1783123200

https://backpack.tf/profiles/76561199877207752#!/compare/1782950400/1783123200

4 keys

Item 2: https://backpack.tf/item/15467707701

Sale 6:

https://backpack.tf/profiles/76561198384846956#!/compare/1778457600/1778803200

https://backpack.tf/profiles/76561198261483133#!/compare/1778716800/1778803200

Backpack purchase then listed on MPTF

Item 3: https://backpack.tf/item/14115780003

Sale 7:

Mannco.Store, excluding

Item 4: https://backpack.tf/item/4090098827

Sale 8:

https://backpack.tf/profiles/76561198262585528#!/compare/1773705600/1780185600

https://backpack.tf/profiles/76561198281336665#!/compare/1780099200/1780185600

Bulk then listed on MAnnco.Store

Item 5: https://backpack.tf/item/3842864813

Sale 9:

https://backpack.tf/profiles/76561198073194379#!/compare/1777680000/1778112000

https://backpack.tf/profiles/76561198052431073#!/compare/1778025600/1778112000

Bulk

Item 6: https://backpack.tf/item/2723038597

Sale 10:

https://backpack.tf/profiles/76561199076124858#!/compare/1778284800/1783728000

https://backpack.tf/profiles/76561199059632349#!/compare/1778284800/1778371200

Dumped to Quicksell.Store, untrace

MPTF: https://marketplace.tf/items/tf2/1111;5;u3196

Sale 11:

Sold for $9.59 on June 23 2026

Keys were $1.83

9.59/1.83=5.24 ~5.25 keys

Sale 12:

Sold for $9.59 on June 30 2026

Keys were $1.84

9.59/1.84=5.21 ~5.2 keys

Sales:

4, 5.2, 5.25

Sellers:

BPTF - https://imgur.com/oICNt7z 4 keys

MPTF - https://marketplace.tf/items/tf2/1111;5;u3196 $29.99 (~16 keys)

STN - https://stntrading.eu/item/tf2/Unusual+Iconic+Outline+Taunt%3A+Skullcracker none

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Skullcracker?appid=440&q=Iconic+Outline https://imgur.com/t6TDuUs none

Going with a full range despite the seller at 4 keys sincez the higher sales have been proven to be a common trading point.

(4+5.24)/2=4.62 so rounding both ends to the nearest 0.05 keys and taking 4-5.25 keys