https://backpack.tf/item/6252750107

Sold alongside 1 key 9.33 ref for a Pooped Deck Unusualifier:

https://backpack.tf/profiles/76561198850121720#!/compare/1627689600/1627776000

https://backpack.tf/profiles/76561198323208779#!/compare/1625184000/1628380800

Snapshots don't work, but the sales from now shouldn't be too far off https://gladiator.tf/sales?item=Non-Craftable%20Unusual%20Taunt:%20The%20Pooped%20Deck%20Unusualifier&at=2021-10-30T18:31:49.916Z

Sales seem to be in the 9-13 key range with sellers at ~13 keys and buyers at ~9 keys (lonley seller at 11 and lonley buyer at 11) Taking 11 as a mid-point and subtracting a key, which gives us 10 keys

Buyout for the Headcase was 9 keys so capping at that https://gladiator.tf/listings/6105c5d807cf4fae0180a3d2

taking 9 keys flat