Blissful Butterflies Propaniac

Item #1:

https://backpack.tf/item/17331399762

Sale 1:

Seller:

https://backpack.tf/profiles/76561198280865714#!/compare/1787270400/1787529600

Buyer:

https://backpack.tf/profiles/76561198104315166#!/compare/1787443200/1787529600

Sold for 200 keys.

https://imgur.com/a/jkuFpYe

1 of 1.

Current Market; Buyers and Sellers:

Buyers:

BP: Buyer at 80 keys.

https://imgur.com/a/l6RwmZc

STN: Buyer at 12 keys (ouch).

https://stntrading.eu/item/tf2/Unusual%20Blissful%20Butterflies%20Propaniac

Sellers:

BP: None

https://imgur.com/a/l6RwmZc

Marketplace: None

https://marketplace.tf/browse/tf2?sterm=%20Blissful%20Butterflies%20Propaniac%20&sinstock=1

SCM: None

https://steamcommunity.com/market/listings/440/Unusual%20Propaniac?appid=440

STN: None

https://stntrading.eu/item/tf2/Unusual%20Blissful%20Butterflies%20Propaniac

Based on evidence, going with 200 keys.