Time to give this thing price. This is my first suggestion in over a year, so feedback/criticisms/roasts are appreciated.

Sale #1:

Sold for a Mega Strike Victory Lap (~165)

Buyer Before & After Comparison: http://backpack.tf/profiles/76561198033378852#!/compare/1494806400/1494892800

Seller Before & After Comparison: http://backpack.tf/profiles/76561198061108999#!/compare/1494806400/1494892800

Item History: http://backpack.tf/item/4437177179

Sale #2

Sold for a Cloud 9 Brotherhood of Arms (90) and 20 Keys Pure.

Buyer's Backpack Before & After: http://backpack.tf/profiles/76561197982127154#!/compare/1493856000/1493942400

Seller's Backpack Before & After: http://backpack.tf/profiles/76561198265023544#!/compare/1493510400/1493942400

Item History: http://backpack.tf/item/4263669602

According to this sale, the value of the unusual would be 70 Keys. However, this sale seems to be an outlier, and will not be used.

Bonus Sale

Additionally, I sold my Sunbeams Ninja Hood (395) for a Secret to Everyone Samur-Eye (230) + the Mega Strike Zoomin' Broomin'. If this sale were to be used, the calculated value for the taunt would also be 165 Keys.

Can't find any other solid sales. Feel free to comment below if you find any additional proof.

There is also a seller on marketplace.tf asking for $360 USD. When using the bp.tf conventer, that amount comes out to be 170 keys.