Item 1:

https://backpack.tf/item/12419468501 - Maybe?

Sale 1:

https://marketplace.tf/items/tf2/31322;5;u3004

Sold for $10.99 on the 19.06.2025

Keys were: $2.01 on the 19th

https://marketplace.tf/items/tf2/5021;6

10.99/2.01

= 5.46

Rounding to 5.5

Item 2:

https://backpack.tf/item/13031989858

Moved back and forth between owner and bot

Item 3:

https://backpack.tf/item/15382003252

Was only recently changed to an unusual. Current owner change it

Most recent sale from seller obtaining it:

https://backpack.tf/profiles/76561198257352830#!/compare/1749600000/1749686400 - Banana phones inventory obtaining it

(ID 15825659997)

https://backpack.tf/profiles/76561198257352830#!/compare/1749686400/1749945600 - Banana phones inventory selling it

Item 4:

https://backpack.tf/item/15459595209

Sale 2:

https://backpack.tf/profiles/76561198871163068#!/compare/1747267200/1747353600

https://backpack.tf/profiles/76561199387670448#!/compare/1747267200/1747440000

Moved between bots but wasn't an unusual yet (ID 15740967264)

Sellers:

BPTF - https://imgur.com/a/ccZpVHN - 3 @ 6 keys

MPTF - https://marketplace.tf/items/tf2/31322;5;u3004 - 2 @ $10.99

STN - https://stntrading.eu/item/tf2/Unusual+%2772+Taunt%3A+Roasty+Toasty - None

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Roasty%20Toasty?filter=%2772

- https://imgur.com/a/JDx2d6y

1 @ $24.81AUD (~6.6 keys), 1 @ $24.53AUD (~6.6 keys), 1 @ $46.01AUD (~12.4 keys)

Sale(s):

5.5

Going with 5.5 keys flat