https://backpack.tf/item/7301726081

https://marketplace.tf/items/tf2/1182;5;u3022

One sale for 16 USD ~ 9 keys

https://backpack.tf/profiles/76561198111475184#!/compare/1583452800/1583539200 9 keys + Jarate Shock Taunt: The Headcase

https://imgur.com/a/8rSomOr

Buyout was 12 keys

https://backpack.tf/item/6469916501

https://backpack.tf/profiles/76561198047852423#!/compare/1579046400/1579132800 - 9 keys

https://backpack.tf/profiles/76561198360265800#!/compare/1547596800/1547769600 - untrace

https://backpack.tf/profiles/76561198396959351#!/compare/1579132800/1581897600 - untrace

https://backpack.tf/profiles/76561198880879698#!/compare/1579046400/1582848000 - looks like 9 keys, 27 ref

Mini for Jarate Shock Taunt: The Headcase:

https://marketplace.tf/items/tf2/30876;5;u3029 - 3 sales for 5 USD, one for 4.4 USD.

4.4 USD sale matches buyers and the 5 USD sales would be just under 3 keys, calling it 3 keys.

Seller at 12 and 13 keys, buyers at 7 keys 20 ref

Sales here 9k, 9k 27 ref, 12 keys

Going 9-12 keys