https://backpack.tf/item/12184295604

Buyer bought multiple taunts for 20 keys:

https://backpack.tf/profiles/76561199564942025#!/compare/1702944000/1703030400

https://backpack.tf/profiles/76561198097232731#!/compare/1702944000/1703030400

Counting as bulk, buyout was 5 keys 4.88 ref https://stntrading.eu/item/tf2/Unusual+Toxic+Grip+Taunt%3A+Bare+Knuckle+Beatdown

They then dumped it to a bot within 2 days, possibly in bulk too, which invalidates the previous sale regardless:

https://backpack.tf/profiles/76561198097232731#!/compare/1703116800/1703203200

https://backpack.tf/profiles/76561199177132803#!/compare/1703116800/1703203200

4 keys 30 ref:

https://backpack.tf/profiles/76561199177132803#!/compare/1703548800/1703635200

https://backpack.tf/profiles/76561198133060031#!/compare/1703548800/1703635200

keys were around 64.05 ref at the time (using nearest price suggestion since Gladiator.tf won't load for some reason) https://backpack.tf/suggestion/658c5648637bb79f770e20ab

If we do the math, that makes this sale 4.47 keys, rounding to 4.45