That was fun.

Sold for 150 keys

https://backpack.tf/profiles/76561198021055079#!/compare/1591401600/1591488000

https://backpack.tf/profiles/76561198400562713#!/compare/1591401600/1591488000

Unknown

https://backpack.tf/profiles/76561198127133218#!/compare/1589328000/1591228800

https://backpack.tf/profiles/76561198021055079#!/compare/1591142400/1591228800

Sold with Anti-Freeze Helmet Without a Home for Something Burning This Way Comes Battle Boonie + Harvest Moon Voodoo JuJu (Slight Return) + Massed Flies Pampered Pyro + Frozen Icefall Bumble Beenie

https://backpack.tf/profiles/76561198099662062#!/compare/1585612800/1585699200

https://backpack.tf/profiles/76561198057452720#!/compare/1585440000/1585612800

Don't think this should be used for any hat involved.

Sold for 130 keys

https://backpack.tf/profiles/76561198090147535#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561197995765113#!/compare/1588032000/1588291200

Sold for Planets Bonk Boy (mini at 53 keys) + TW Head Warmer (16 keys)+ 55 keys + Collector's Festivized Professional Killstreak Degreaser (mini at 20 keys)

https://backpack.tf/profiles/76561198057452720#!/compare/1587945600/1588032000

https://backpack.tf/profiles/76561198155901538#!/compare/1588032000/1588118400

53 + 55 + 16 + 20 = 144 keys

Buyout was 130 keys

https://bot.tf/stats/listings/MGLK522Z

Capping at 130 keys.

Quick mini for the Bonk boy:

Sold for 90 on March 16, 2020

90/1.7 = 52.94 rounding to 53 keys

https://marketplace.tf/items/tf2/451;5;u32;strange

Quick mini for the Degreaser:

Sold for 20 keys

https://backpack.tf/profiles/76561197988841702#!/compare/1583366400/1583539200

Classifieds:

https://gyazo.com/78a96bf55cd98576bc1c465586091294

Sales are at 130, 130, and 150.

Taking a range of 130-150 keys here.