Icepick

https://backpack.tf/item/1482902782

Sale 1) Sold for 24 Keys

https://backpack.tf/profiles/76561198143037792#!/compare/1521244800/1522281600

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Sale 2) Sold for a Stormy Storm Towering Pillar of Hats + 12 Keys

https://backpack.tf/profiles/76561198021055079#!/compare/1527465600/1527552000

https://imgur.com/a/GIT4ikl - Capped by the Buyout of 30 Keys

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https://backpack.tf/item/1284210985

Sale 3) Sold for 26 Keys

https://backpack.tf/profiles/76561198310144372#!/compare/1520553600/1520640000

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https://backpack.tf/item/830562944

Sale 4) Sold for 23 Keys + 15 Refined

https://backpack.tf/profiles/76561198005782106#!/compare/1527206400/1527465600

Rounds to 24 Keys

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https://backpack.tf/item/1504484276

Sale 5) Sold for 24 Keys

https://backpack.tf/profiles/76561198117433241#!/compare/1520553600/1520640000

https://backpack.tf/profiles/76561198021055079#!/compare/1520467200/1520553600

The Keys were used to buy the Rebel as seen here: https://backpack.tf/profiles/76561197994697258#!/compare/1520553600/1520640000

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Sale 6) Sold for 27 Keys + ~1 Key of Items

https://backpack.tf/profiles/76561198021055079#!/compare/1521331200/1521417600

27 + 1 = 28 Keys

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Sale 7) Sold + ~1 Key of Refined for a Strange Professional Killstreak Gunslinger (~26 Keys)

https://backpack.tf/profiles/76561198437502762#!/compare/1521331200/1521504000

26 - 1 = 25 Keys

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https://backpack.tf/item/3479243505

Sale 8) Sold for 23 Keys + <0.5 Keys of Refined

https://backpack.tf/profiles/76561198114545227#!/compare/1523836800/1523923200

Low outlier.

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Sale 9) Sold + 6 Keys + ~4 Keys of Items for a Purple Confetti Rotation Sensation (37.5 Keys)

https://backpack.tf/profiles/76561198262802628#!/compare/1524873600/1525132800

37.5 - 6 - 4 = 27.5, which rounds to 28 Keys

Rotation Sensation Mini

https://backpack.tf/profiles/76561198411495266#!/compare/1523491200/1523577600 - Neutron Falkirk (30.5 Keys) + 7 Keys + ~0.7 Keys of Items

https://backpack.tf/profiles/76561198172732375#!/compare/1523491200/1523577600

http://www.tf2outpost.com/trade/29615369 - Capped by the Buyout of 36 Keys

https://backpack.tf/profiles/76561198172732375#!/compare/1523491200/1523577600 - Sold + 8 Keys for a Sunbeams Sola Topi

https://backpack.tf/profiles/76561198128130998#!/compare/1525996800/1526083200 - Sold for a Duped Scorching Hetman’s

https://backpack.tf/profiles/76561198152299329#!/compare/1526515200/1526688000 - Sold for a Duped DBD Hustler’s + 7 Keys

http://www.tf2outpost.com/trade/29654932 - Capped by the Buyout of 40 Keys

Taking 37.5 for the Rotation

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Sale 10) Sold for a Vivid Plasma Private Eye (22.5 Keys) + Australium Blutsauger (~6 Keys)

https://backpack.tf/profiles/76561197994697258#!/compare/1525392000/1525478400

22.5 + 6 = 28.5, which rounds to 29 Keys

Private Eye Mini

https://backpack.tf/item/420135432

Sale 1) Sold for 23 Keys

https://backpack.tf/profiles/76561197994697258#!/compare/1525651200/1525737600

https://backpack.tf/item/965515015

Sale 2) Sold + '72 Battin' a Thousand + ~3 Keys of Items + 1 Key for a Dead Presidents Rotation Sensation (26 Keys)

https://backpack.tf/profiles/76561198087656519#!/compare/1526342400/1526428800

Low outlier.

Rotation Macro

https://backpack.tf/suggestion/5b0cd07644325a2e276007d6 - 26 Keys

Sale 3) Quicksold for 19 Keys

https://backpack.tf/profiles/76561198253485116#!/compare/1526342400/1526428800

https://backpack.tf/item/2915518777

Sale 4) Sold for a Circling Heart Frenchman's Beret (22 Keys)

https://backpack.tf/profiles/76561198310144372#!/compare/1520640000/1520726400

Beret Mini

https://backpack.tf/profiles/76561198310144372#!/compare/1521072000/1521158400 - Sold for a GE Beret (Upgrade, ignoring)

https://backpack.tf/profiles/76561198119390604#!/compare/1521331200/1521417600 - Sold for 21 Keys

https://backpack.tf/profiles/76561198134617056#!/compare/1524787200/1524873600 - Sold + DP Dixie for a Duped Planets TC

https://backpack.tf/profiles/76561197964171516#!/compare/1527033600/1527120000 - Sold for a Sunbeams Brain-Warming Wear

https://backpack.tf/profiles/76561198153140512#!/compare/1522540800/1522627200 - Sold for a Green Confetti Fancy Fedora (horribly Outdated)

https://backpack.tf/profiles/76561198068689092#!/compare/1522713600/1522800000 - Sold for a Haunted Ghosts L'Inspecteur

Couldn’t find any Minis for the Team Captain. Taking 21 - 23 Keys for the Beret.

Sunbeams Brain-Warming Wear Micro

https://imgur.com/a/qDtv7tI - Seller at 22 Keys (1 Day) and 23.6 Keys (19 Days).

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Sale 11) Sold for some Spelled items

https://backpack.tf/profiles/76561198353451603#!/compare/1526428800/1526515200

Low outlier.

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Sale 12) Sold for an Infernal Flames High Five + 10 Keys

https://backpack.tf/profiles/76561197991111981#!/compare/1527206400/1527292800

This would be better used to update the High Five.