Resuggesting... range change

Item 1:

https://backpack.tf/item/13989736784

Sale 1:

Untraceable/Transfer

https://backpack.tf/profiles/76561198340323130#!/compare/1704326400/1704585600

https://backpack.tf/profiles/76561198053811988#!/compare/1704499200/1704585600

Sale 2:

Untraceable

https://backpack.tf/profiles/76561198053811988#!/compare/1705449600/1705536000

https://backpack.tf/profiles/76561198179465107#!/compare/1705363200/1705536000

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Item 2:

https://backpack.tf/item/13981670025

Sale 3:

Untraceable

https://backpack.tf/profiles/76561198392239212#!/compare/1706832000/1706918400

https://backpack.tf/profiles/76561199026390261#!/compare/1706745600/1706832000

Sale 4:

Untraceable

https://backpack.tf/profiles/76561199026390261#!/compare/1706832000/1706918400

https://backpack.tf/profiles/76561199160426208#!/compare/1706832000/1706918400

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Item 3 + 4 + 5 + 6: - Transferred to MPTF

https://backpack.tf/item/13922802494

https://backpack.tf/item/13908594817

https://backpack.tf/item/13903885973

https://backpack.tf/item/13903885972

https://backpack.tf/item/4261150356

https://backpack.tf/item/4255343895

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Item 7:

https://backpack.tf/item/13897308189 - Unusualified

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Item 8:

https://backpack.tf/item/13879700422 - Looks like gambling

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Item 9:

https://backpack.tf/item/10940343372

Skipping first 3 sales: Non-unusual

Sale 5:

Untraceable

https://backpack.tf/profiles/76561198094818081#!/compare/1701907200/1701993600

https://backpack.tf/profiles/76561198033762881#!/compare/1701993600/1703030400

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Item 10:

https://backpack.tf/item/9618762332 - Non-unusual sales, then Unusualified

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Item 11:

https://backpack.tf/item/7435596401 - Unusualified

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Item 12:

https://backpack.tf/item/6915256768

Skipping non-unusual sales[/b]

[u]Sale 6:

Sold for 8 Keys (Unusual ID: "13918599281")

https://backpack.tf/profiles/76561198072391839#!/compare/1702512000/1702598400

https://backpack.tf/profiles/76561198197811610#!/compare/1702512000/1702598400

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Item 13:

https://backpack.tf/item/6364208062

Skipping non-unusual sales[/b]

[u]Sale 7:

Untraceable

https://backpack.tf/profiles/76561198072391839#!/compare/1703203200/1703289600

https://backpack.tf/profiles/76561199059160806#!/compare/1703203200/1703289600

Sale 8:

Sold for 12 Keys (Unusual ID: "14008423990")

https://backpack.tf/profiles/76561199059160806#!/compare/1704240000/1704326400

https://backpack.tf/profiles/76561199407031624#!/compare/1704153600/1704326400

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Item 14:

https://backpack.tf/item/5741432980 - Unusualified

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Item 15:

https://backpack.tf/item/4808649304 - Unusualified

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Item 16:

https://backpack.tf/item/4314305889

Skipping non-unusual sales[/b]

[u]Sale 9:

Untraceable

https://backpack.tf/profiles/76561198055991746#!/compare/1702339200/1702598400

https://backpack.tf/profiles/76561198149960843#!/compare/1702512000/1702598400

Sale 10:

Untraceable

https://backpack.tf/profiles/76561198149960843#!/compare/1702598400/1702684800

https://backpack.tf/profiles/76561198112959245#!/compare/1702598400/1702684800

Sale 11:

Sold for 8 Keys (Unusual ID: "14086591923")

https://backpack.tf/profiles/76561198112959245#!/compare/1705536000/1706227200

https://backpack.tf/profiles/76561198025329724#!/compare/1705968000/1706054400

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Item 17:

https://backpack.tf/item/4284486718 - Unusualified

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Item 18:

https://backpack.tf/item/4264102016

Sale 12:

Untraceable

https://backpack.tf/profiles/76561198013197822#!/compare/1706054400/1706140800

https://backpack.tf/profiles/76561198072811851#!/compare/1706572800/1706659200

Sale 13:

Untraceable

https://backpack.tf/profiles/76561198072811851#!/compare/1706659200/1706745600

https://backpack.tf/profiles/76561198208582767#!/compare/1706659200/1706745600

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Item 18:

https://backpack.tf/item/4257814780 - Unusualifier

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Marketplace.TF:

https://marketplace.tf/items/tf2/30672;5;u3143

https://marketplace.tf/items/tf2/5021;6

$26.69/$1.74 = ~15 Keys (Dec 10)

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Total Sales

8, 8, 12, 15

https://imgur.com/wFSD9PG

Taking 8 - 12 Keys

Credit to Lemon:

Unsold at 12 keys on SCM:

https://gyazo.com/1d67f04e7df3b0a92b340de7193c8ca8

https://gyazo.com/82b48b996225c4ed5ffade679ac4a7d7

I'd exclude 15 from the range here