Item 1:

https://backpack.tf/item/13771012291

Sale 1:

Sold for 35 Keys

https://backpack.tf/profiles/76561198045929109#!/compare/1703894400/1704153600

https://backpack.tf/profiles/76561198125791160#!/compare/1703808000/1703894400

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Item 2:

https://backpack.tf/item/13694319454

Sale 2:

Sold +30 Keys for a Demonic Impaler Burning Beanie

https://backpack.tf/profiles/76561198043242442#!/compare/1698192000/1698278400

https://backpack.tf/profiles/76561198120757569#!/compare/1698019200/1698192000

No other sales on Demonic Impaler Burning Beanie - Better used there?

Sale 3:

Sold for 40 Keys

https://backpack.tf/profiles/76561198120757569#!/compare/1698451200/1698624000

https://backpack.tf/profiles/76561198109986831#!/compare/1698451200/1698537600

Sale 4:

Sold for 52 Keys

https://backpack.tf/profiles/76561198109986831#!/compare/1703289600/1703462400

https://backpack.tf/profiles/76561198044026486#!/compare/1703376000/1703462400

Sale 5:

Untraceable

https://backpack.tf/profiles/76561198044026486#!/compare/1703980800/1704067200

https://backpack.tf/profiles/76561198376885782#!/compare/1703980800/1704067200

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Item 3:

https://backpack.tf/item/13661025638

Sale 6:

Untraceable

https://backpack.tf/profiles/76561198323750149#!/compare/1697155200/1704153600

https://backpack.tf/profiles/76561199104559253#!/compare/1697760000/1697932800

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Item 4:

https://backpack.tf/item/13648340166

Sale 7:

Sold for PB Professional Killstreak Australium Wrench

https://backpack.tf/profiles/76561198084146269#!/compare/1698364800/1698451200

https://backpack.tf/profiles/76561198025030539#!/compare/1698278400/1698451200

----

PB ProKS Aussie Wrench:

https://imgur.com/5JvIpE8 - Buy orders @ 57 Keys

----

Sale 8:

Sold +20 Keys for a Stellar Ascent Glow from Below - Better used there

https://backpack.tf/profiles/76561198025030539#!/compare/1700179200/1700524800

https://backpack.tf/profiles/76561198045152184#!/compare/1699747200/1700524800

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Item 5:

https://backpack.tf/item/13638798988

Sale 9:

Sold for 10 Keys + Strange Bazaar Bargain + Hard Carry Winter Wrap Up + Wicked Wood Crack Pot

https://backpack.tf/profiles/76561198200906527#!/compare/1696982400/1697068800

https://backpack.tf/profiles/76561198067893369#!/compare/1696982400/1697068800

----

Winter wrap up:

Sold for 23 Keys?

https://backpack.tf/profiles/76561198200906527#!/compare/1699488000/1699574400

https://backpack.tf/profiles/76561198086076383#!/compare/1699488000/1699660800

Crack pot

Sold for ~22 Keys to a bot

https://backpack.tf/profiles/76561198200906527#!/compare/1699747200/1699920000

https://backpack.tf/profiles/76561199072654974#!/compare/1699833600/1699920000

----

23 + 22 + 10 +1.5 = ~57 Keys

Sale 10:

Bulky

https://backpack.tf/profiles/76561198067893369#!/compare/1699401600/1699488000

https://backpack.tf/profiles/76561198120672630#!/compare/1699401600/1699488000

Sale 11:

Bulk sale

https://backpack.tf/profiles/76561198120672630#!/compare/1703980800/1704067200

https://backpack.tf/profiles/76561198311498888#!/compare/1703980800/1704067200

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Total Sales

35, 40, 52, 57, 57+

https://imgur.com/NvKzYO3

Given that sellers are 44/45 Keys atm, it would be best to exclude the sales @ 52 + 57 Keys

Taking 35 - 40 Keys