Sale 1:

https://backpack.tf/profiles/76561198079170528#!/compare/1521504000/1521590400

https://backpack.tf/profiles/76561198044425376#!/compare/1521504000/1521590400

Sold for Festivized Cool Spec KS FT Dovetailed Degreaser + 5 keys

Degreaser Mini:

https://backpack.tf/profiles/76561198079170528#!/compare/1522195200/1522281600

https://backpack.tf/profiles/76561198260129065#!/compare/1522281600/1522368000

Sold for Festivized Spec KS Aussie Wrench(18.23)

Only traceable sale.

Total is 23.23 keys

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Sale 2:

https://backpack.tf/profiles/76561198086793593#!/compare/1518220800/1518393600

https://backpack.tf/profiles/76561198292242424#!/compare/1518220800/1518393600

Sold for 4 keys + Slumber Jester

Jester Mini:

https://backpack.tf/profiles/76561198050518375#!/compare/1521417600/1521504000

https://backpack.tf/profiles/76561198275577742#!/compare/1521331200/1521504000

Sold for 5 keys + Miami Marauder(21) + TW Wayfinder(16.5)

Total is 21 + 16.5 + 5 = 42.5 keys

https://backpack.tf/profiles/76561198054914968#!/compare/1518912000/1519084800

https://backpack.tf/profiles/76561198217100151#!/compare/1518998400/1519084800

Sold for Burning Topi(36.5)

https://backpack.tf/profiles/76561198240946208#!/compare/1518739200/1518912000

Sold for 29 keys, seems low, maybe untraceable keys?

https://backpack.tf/profiles/76561198135388328#!/compare/1520726400/1520812800

https://backpack.tf/profiles/76561198050518375#!/compare/1520726400/1520812800

Sold for 31 pure, instant sell from scrap bot.

Taking 36.5 - 42.5, average of 39.5 keys

Total is 43.5 keys

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Sale 3:

https://backpack.tf/profiles/76561198168863803#!/compare/1521504000/1521590400

https://backpack.tf/profiles/76561198176213142#!/compare/1521417600/1521590400

Sold for DBD Toy Soldier

Toy Soldier Mini:

https://backpack.tf/profiles/76561198264591866#!/compare/1521331200/1521504000

https://backpack.tf/profiles/76561198176213142#!/compare/1521244800/1521331200

Sold for Slumber Neckwear(39.5)

Only traceable sale, taking 39.5 keys

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Sale 4:

https://backpack.tf/profiles/76561198176213142#!/compare/1521417600/1521590400

https://backpack.tf/profiles/76561198410145031#!/compare/1521590400/1521676800

Sold with 1.19 keys in sweets for Duped Surge Company Mann

Company Mini:

https://backpack.tf/profiles/76561198179707937#!/compare/1521072000/1521158400

https://backpack.tf/profiles/76561198186922501#!/compare/1521072000/1521158400

Sold for Sunbeams Stout Shako(51.5)

Only non dupe sale, taking 51.5 keys

Total is 50.31 keys

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Sale 5:

https://backpack.tf/profiles/76561198410145031#!/compare/1521676800/1522195200

https://backpack.tf/profiles/76561198074625962#!/compare/1522108800/1522195200

Sold for Aces Bonk Boy + 3 keys

Bonk Mini:

https://backpack.tf/profiles/76561198410145031#!/compare/1522195200/1522368000

https://backpack.tf/profiles/76561198182213262#!/compare/1522281600/1522368000

Sold for Steaming Rack(36) + 1.03 keys in sweets

Total is 37.03 keys

https://marketplace.tf/items/451;5;u59/Power%20Surge%20Bonk%20Boy

Sale for 89.99 USD, keys at the time had a mode of 1.99

89.99 / 1.99 = 45.22 keys

Sales are far apart, average of 41 keys.

Total is 44 keys.

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Sale are @:

23.23, 39.5, 43.5, 44, 50.31

Calling 23 & 50 outliers.

Rounding 39.5 to 40

Taking 40 - 44 keys.