https://backpack.tf/item/13323183778

~5 keys:

https://backpack.tf/profiles/76561198850274253#!/compare/1711411200/1711497600

https://backpack.tf/profiles/76561198386344068#!/compare/1711411200/1711497600

https://backpack.tf/item/13432179183

4 keys:

https://backpack.tf/profiles/76561199110809353#!/compare/1712016000/1712102400

https://backpack.tf/profiles/76561198055923827#!/compare/1712016000/1712102400

11 keys:

https://backpack.tf/profiles/76561198055923827#!/compare/1712448000/1712534400

https://backpack.tf/profiles/76561199485678347#!/compare/1712361600/1712793600

https://backpack.tf/item/12453875022

Bulk/account transfer:

https://backpack.tf/profiles/76561198258001464#!/compare/1712620800/1712707200

https://backpack.tf/profiles/76561198198822863#!/compare/1708992000/1713225600

https://backpack.tf/item/6592738188

Dumped to Quicksell.Store; Blazed Brew Taunt: Conga, Cloud 9 Doctor's Sack and some ref match:

https://backpack.tf/profiles/76561198141118106#!/compare/1709510400/1711756800

https://backpack.tf/profiles/76561199085116273#!/compare/1709510400/1709596800

Dead Man's Party Taunt: Yeti Smash + 2 keys:

https://backpack.tf/profiles/76561199085116273#!/compare/1710979200/1711065600

https://backpack.tf/stats/Unusual/Taunt%3A%20Yeti%20Smash/Tradable/Craftable/3127

the Dead Man Yeti Smash was most likely valued at buyers since it's a Quicksell.Store sale. Buyers are currently at 2.25 so that would make this 4.25 which falls in-range with the other sales.

~~

https://imgur.com/a/fcrUHzO Seller at $9 (~4.25 keys)

https://marketplace.tf/items/tf2/1183;5;u3121 lots of sellers at $17.99 and $19.99 (~11 and ~12 keys respectively)

Sales at 4, 4.25, 5, 11

11 is obviously an outlier here. Gonna keep 5 in the range for now but I'll keep checking the SCM seller to see if it eventually sells. If it doesn't then I'll narrow down the range. Going with 4-5 keys