Resuggestion

https://marketplace.tf/items/tf2/644;5;u30

Oct 23 - $80.00 = 44 keys https://backpack.tf/item/1504794780

Nov 14 - $80.00 = 44 keys https://backpack.tf/item/1953921974

Dec 29 - $88.89 = 50 keys https://backpack.tf/item/2780463637

https://bot.tf/stats/listings/Y8EVJZ1Z 38 key buyout for the Oct 23 sale

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https://backpack.tf/item/2780463637

Skipping scammer/stn.tf trades

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https://backpack.tf/profiles/76561198337734785#!/compare/1572566400/1572652800

https://backpack.tf/profiles/76561198825153469#!/compare/1572393600/1572652800

40 keys and 11 refined was returned as change

pretty much 39 keys 40 refined like the buyout https://bot.tf/stats/listings/M0DJ56DX

but its pretty much 40 keys

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https://backpack.tf/profiles/76561198825153469#!/compare/1572652800/1572739200

https://backpack.tf/profiles/76561198040585908#!/compare/1572652800/1572739200

Pro KS Aus Minigun, which is around 33 keys https://gyazo.com/58ec02ebbe1d649bd5a36a5afa20ed33

Buyers at 33 keys on the Head Warmer though https://gyazo.com/22e2d0d20bf9d91dc63b2d154dbabf50

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https://backpack.tf/profiles/76561198134238543#!/compare/1572739200/1572825600

https://backpack.tf/profiles/76561198040585908#!/compare/1572739200/1572825600

Not exactly bulk, but better used on the Pullover

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https://backpack.tf/profiles/76561198134238543#!/compare/1573516800/1573603200

https://backpack.tf/profiles/76561198114585328#!/compare/1573516800/1573603200

Strange Abduction Head Warmer + Nether Void Skating Scorcher, very high outlier

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https://backpack.tf/profiles/76561198232041512#!/compare/1573516800/1573603200

https://backpack.tf/profiles/76561198114585328#!/compare/1573516800/1573603200

35 keys

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https://backpack.tf/profiles/76561198275222296#!/compare/1575072000/1575331200

https://backpack.tf/profiles/76561198214230952#!/compare/1575244800/1575331200

Not exactly bulk, but better used on the Beak

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https://backpack.tf/profiles/76561198192602363#!/compare/1574985600/1575072000

https://backpack.tf/profiles/76561198035499016#!/compare/1574985600/1575072000

60 keys, high outlier

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https://backpack.tf/item/1499178485

After buying it for 60 keys, quicksold to scrap.tf

and while in scrap.tf, it quicksold to another user as well

Not including

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Sales:

33

35

38

40

44

50

60

Buyers at 33 keys https://gyazo.com/22e2d0d20bf9d91dc63b2d154dbabf50

so let's exclude 33 and 35

hmmm lets see

60 is clear outlier

50 is the marketplace sale by beaser

beaser normally does the price divided by 2 = buyout but it wasnt there this time, if it was it would most likely be 45

Going with a range of 38-44, suggested by moderator