Sale 1:

Sold for 3 keys + 23 ref

https://backpack.tf/profiles/76561198311498888#!/compare/1710460800/1710547200

https://backpack.tf/profiles/76561198068068814#!/compare/1710460800/1710547200

https://backpack.tf/item/12823489523

= 3.35 keys

Sale 2:

Sold to a bot for 2 keys + 9 ref

https://backpack.tf/profiles/76561199193933005#!/compare/1708041600/1708387200

https://backpack.tf/profiles/76561199521823568#!/compare/1708300800/1708387200

https://backpack.tf/item/14106535721

= 2.15 keys

https://backpack.tf/item/12963566514 - marketplace

https://backpack.tf/item/12347525093 - unusualified

https://backpack.tf/item/12286745243 - marketplace

Sellers:

https://marketplace.tf/items/tf2/31286;5;u3003

https://backpack.tf/item/14106535721 -$8.99, marketplace

https://backpack.tf/item/12963566514 - $8.99, marketplace

https://backpack.tf/item/12635633399 - $14.99, marketplace

Sales at:

2.15

3.35

2.15 is a lone sale to a bot. STN is currently paying a little higher. Should be fine to exclude.

https://stntrading.eu/item/tf2/Unusual+Holy+Grail+Taunt%3A+Texas+Twirl+%27Em

https://imgur.com/a/623FILg

Taking 3.35 flat.