Taking from December 1th

https://marketplace.tf/items/tf2/1111;5;u3030

Dec 4 $10.55 = 6.2 keys

Dec 20 $10.06 = 6.1 keys

Jan 4 $12.99 = 7.3 keys

Jan 6 $8.00 = 4.4 keys

Jan 8 $8.00 = 4.5 keys

Jan 15 $12.00 = 6.7 keys

Jan 18 $13.99 = 7.9 keys

https://backpack.tf/item/2795063895

//

https://backpack.tf/profiles/76561198342161127#!/compare/1580947200/1581033600

https://backpack.tf/profiles/76561198135398757#!/compare/1580256000/1581033600

Bulk

//

https://backpack.tf/profiles/76561198110870199#!/compare/1578441600/1579132800

https://backpack.tf/profiles/76561199006814024#!/compare/1579132800/1579219200

Untraceable

//

https://backpack.tf/profiles/76561198202729136#!/compare/1575331200/1575417600

https://backpack.tf/profiles/76561198026129220#!/compare/1575331200/1575417600

Bulk or quicksell

//

https://backpack.tf/profiles/76561198100477765#!/compare/1573689600/1573776000

https://backpack.tf/profiles/76561198838447026#!/compare/1573689600/1573776000

Quicksell to bot

//

https://backpack.tf/profiles/76561198838447026#!/compare/1574726400/1574812800

https://backpack.tf/profiles/76561198209071285#!/compare/1574640000/1574899200

Most likely the 5 key 44 refined bot.tf sale

(5.8 keys)

https://bot.tf/stats/item?def=1111&q=5&ef=Nether%20Void&craft=1&aus=0&ks=0&source=browser_script

https://bot.tf/stats/listings/4RG68JR9

//

https://backpack.tf/profiles/76561198209071285#!/compare/1580256000/1581120000

https://backpack.tf/profiles/76561198129197811#!/compare/1580169600/1580342400

Untraceable

//

https://backpack.tf/profiles/76561198129197811#!/compare/1580601600/1580688000

https://backpack.tf/profiles/76561198141319249#!/compare/1580515200/1580688000

7 keys

//

https://backpack.tf/profiles/76561198186922501#!/compare/1578182400/1578268800

https://backpack.tf/profiles/76561198115684809#!/compare/1578182400/1578355200

Bulk

//

https://backpack.tf/profiles/76561198115684809#!/compare/1580774400/1580860800

https://backpack.tf/profiles/76561198221777872#!/compare/1580774400/1580860800

Bulk

//

https://backpack.tf/profiles/76561198150917840#!/compare/1573948800/1574035200

https://backpack.tf/profiles/76561198850215243#!/compare/1573948800/1574035200

Untraceable

//

https://backpack.tf/profiles/76561198850215243#!/compare/1574121600/1574208000

https://backpack.tf/profiles/76561198331164903#!/compare/1573603200/1574208000

6 keys, near id 8269657851 in first compare link

//

https://backpack.tf/profiles/76561198940966532#!/compare/1578441600/1578528000

https://backpack.tf/profiles/76561198116608226#!/compare/1578528000/1578614400

i dont know

//

https://backpack.tf/profiles/76561198071082937#!/compare/1573430400/1573603200

https://backpack.tf/profiles/76561198334946156#!/compare/1573516800/1573603200

better used on the high five

//

https://backpack.tf/profiles/76561198334946156#!/compare/1573603200/1573689600

https://backpack.tf/profiles/76561198097271466#!/compare/1573516800/1573603200

Likely quicksold to the bot

//

https://backpack.tf/profiles/76561198097271466#!/compare/1577145600/1577232000

https://backpack.tf/profiles/76561198085557220#!/compare/1577059200/1579305600

5 keys + 33 refined, near id 8362495534 in the first compare link

(5.6 keys)

//

https://backpack.tf/profiles/76561198095236132#!/compare/1578528000/1578614400

https://backpack.tf/profiles/76561198403189201#!/compare/1578614400/1579132800

I don't know

//

https://backpack.tf/profiles/76561198205226501#!/compare/1580169600/1580256000

https://backpack.tf/profiles/76561198059098316#!/compare/1579996800/1580256000

Better used on the Luxury Lounge

//

https://backpack.tf/profiles/76561198180719433#!/compare/1576022400/1576108800

https://backpack.tf/profiles/76561198838447026#!/compare/1575936000/1576022400

Likely a quicksell

//

https://backpack.tf/profiles/76561198838447026#!/compare/1576022400/1576108800

https://backpack.tf/profiles/76561198068780534#!/compare/1576022400/1576108800

5 keys + 37 refined, near id 8321087446 in first compare link

(5.7 keys)

//

https://backpack.tf/profiles/76561198068780534#!/compare/1577232000/1580860800

https://backpack.tf/profiles/76561198018101085#!/compare/1577145600/1577404800

Bulk

//

https://backpack.tf/profiles/76561198018101085#!/compare/1578787200/1579046400

https://backpack.tf/profiles/76561198156083411#!/compare/1579132800/1579305600

Untraceable, likely an MP sale

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Sales:

4.4

4.5

5.6 - pure

5.7 - pure

5.8 - pure

6 - pure

6.1

6.2

6.7

7 - pure

7.3

7.9

all others are marketplace sales

buyers at 4 keys

https://gyazo.com/31577559901a421f8972541740c5529b

https://gyazo.com/f42bf1a28bc929d30c5ebde14f034731

i think i want to cut off 4.4-4.5 and 7.3-7.9 to give this a nice-ish range of 5.6-7 keys

5.6-7 keys includes all of the important pure sales