Item 1: https://backpack.tf/item/13113483053

Sale 1:

https://backpack.tf/profiles/76561199865408341#!/compare/1773014400/1773187200

https://backpack.tf/profiles/76561199550301253#!/compare/1773100800/1773187200

Dumped to a Doplhin bot. untrace

Sale 2:

https://backpack.tf/profiles/76561199550301253#!/compare/1775174400/1775260800

https://backpack.tf/profiles/76561199332986478#!/compare/1767225600/1777420800

Untrace

MPTF: https://marketplace.tf/items/tf2/1109;5;u3121

Items 2. 3 and 4: https://backpack.tf/item/6492378084 https://backpack.tf/item/6507094119 https://backpack.tf/item/13451948532

Sale 3:

Sold for $7.49 on March 2 2026

Keys were $1.88

7.49/1.88=3.98 ~4 keys

Sale 4:

Sold for $9.99 on April 9 2026

Keys were $1.97

9.99/1.97=5.07 ~5.05 keys

Sale 5:

Sold for $19.99 on May 3 2026

Keys were $2

19.99/2=9.99 ~10 keys

Sales:

4, 5.05, 10

Sellers:

BPTF - https://imgur.com/oLmk1L6 none

MPTF - https://marketplace.tf/items/tf2/1109;5;u3121 none

STN - https://stntrading.eu/item/tf2/Unusual+Pastel+Trance+Taunt%3A+Results+Are+In none

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Results%20Are%20In?appid=440&q=Pastel%2520Trance https://imgur.com/gquFu5z none

10 looks like a distant outlier, going with 4-5.05 keys