I like mirror (UPDATED)

Sale #1 - 1 for 1 with a 72 Burst Chester - Indate (Extreamly close tho) -

Counting at 18.5 keys

https://backpack.tf/profiles/76561198100477765#!/compare/1519862400/1519948800

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Sale #2 - 14 keys + double spelled Bigg Mann on Campus -

Taking 14 keys

https://backpack.tf/profiles/76561198060319763#!/compare/1521936000/1522022400

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Sale #3 - Bulk Sale -

Excluding

https://backpack.tf/profiles/76561198022806102#!/compare/1517875200/1517961600

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Sale #4 - 16 keys 3.66ref -

Taking 16 keys for flat number

https://imgur.com/a/dpO2SmE

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Sale #5 - (invalid) 19 keys pure

Sold on mannco.trade, using as support for a flat 19

https://backpack.tf/profiles/76561198045174236#!/compare/1519171200/1519257600

https://backpack.tf/profiles/76561198100477765#!/compare/1518912000/1519257600

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Sale #6 - Miami Tungsten Toque + Ausi Sticky + 1.5 keys in sweets (strange ks black box + strange spec ks direct hit + hurt locher)

https://backpack.tf/profiles/76561198349707208#!/compare/1519948800/1520553600

10.5 + 12.6 + 1.5 = 24.35

Taking 24.6 Keys

Mini - Miami Tungsten Toque

https://backpack.tf/suggestion/5ae0e00144325a6eee7b9c8a

Taking 10.5

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Sale #7 - Untraced

https://backpack.tf/profiles/76561198100477765#!/compare/1518825600/1519344000

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Overall, Taking 19 flat

Excluding -

14 keys was a quicksale

16 keys sold very fast on scrap.tf

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New part of the suggestion

sold withing 2 days for a spec ks ausi medigun

https://imgur.com/a/MGHfuiP

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Spec ks ausi medi mini

- in imgur link above

- sold for 25 keys 13 ref / 25.47 keys, rounded to 25 keys

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overall taking 19 - 25 keys