Sale #1:

https://backpack.tf/profiles/76561198100426347#!/compare/1552003200/1552176000

Bulk.

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Sale #2:

https://backpack.tf/profiles/76561198048851745#!/compare/1552089600/1552176000

Bulk.

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Sale #3:

https://backpack.tf/profiles/76561198048851745#!/compare/1552435200/1552521600

Unsure, only 1 key matches.

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Sale #4:

https://backpack.tf/profiles/76561198000618537#!/compare/1549584000/1549670400

Untracable.

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Sale #5:

https://backpack.tf/profiles/76561198425436159#!/compare/1550188800/1550275200

SCM Sale.

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Sale #6:

https://backpack.tf/profiles/76561198425436159#!/compare/1550275200/1550534400

Untracable.

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Sale #7:

https://backpack.tf/profiles/76561198205939253#!/compare/1549324800/1549411200

Untracable.

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Sale #8:

https://backpack.tf/profiles/76561198042919373#!/compare/1550188800/1550620800

Untracable.

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Sale #9:

https://backpack.tf/profiles/76561198131002920#!/compare/1552176000/1552262400

Untracable.

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Sale #10:

https://backpack.tf/profiles/76561198047593891#!/compare/1550448000/1550534400

Sold for 8 keys and 19 ref.

8.5 keys

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Sale #11:

https://backpack.tf/profiles/76561198048851745#!/compare/1550102400/1550188800

Unsure.

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Sale #12:

https://backpack.tf/profiles/76561198215681879#!/compare/1551312000/1552089600

Sold for 10 keys.

10 keys

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Sale #13:

https://backpack.tf/profiles/76561198081048453#!/compare/1549584000/1551571200

Bulk.

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Sale #14:

https://backpack.tf/profiles/76561198400385994#!/compare/1551571200/1551744000

Untracable.

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Sale #15:

https://backpack.tf/profiles/76561198104816709#!/compare/1549152000/1549238400

Bulk.

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Sale #16:

https://backpack.tf/profiles/76561198093438754#!/compare/1549238400/1549411200

Bulk.

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Sale #17:

https://backpack.tf/profiles/76561198132891746#!/compare/1546905600/1550620800

SCM sale.

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Sale #18:

https://backpack.tf/profiles/76561198117379982#!/compare/1550016000/1550102400

Unsure.

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Sale #19:

https://backpack.tf/profiles/76561198045188891#!/compare/1549756800/1550016000

Sold for 8 keys and 22 ref.

8.5 keys

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Sale #20:

https://backpack.tf/profiles/76561198045188891#!/compare/1549324800/1549584000

Sold for a Screaming Tiger Taunt: Rock, Paper, Scissors (10.5 keys) and ~1 key worth of refined metal.

12 keys

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Sale #21:

https://backpack.tf/profiles/76561198307766031#!/compare/1549324800/1550534400

Unsure.

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Sale #22:

https://bot.tf/stats/item?def=31008&q=5&ef=Omniscient+Orb&craft=1&aus=0&ks=0

https://backpack.tf/profiles/76561198312583107#!/compare/1548543600/1548630000

Sold for 11 keys.

11 keys

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Sale #23:

https://bot.tf/stats/item?def=31008&q=5&ef=Omniscient+Orb&craft=1&aus=0&ks=0

https://backpack.tf/profiles/76561198341171690#!/compare/1550098800/1550185200

Sold for 10 keys.

10 keys

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Sale #24:

https://bot.tf/stats/item?def=31008&q=5&ef=Omniscient+Orb&craft=1&aus=0&ks=0

https://backpack.tf/profiles/76561198335791307#!/compare/1551654000/1551740400

Sold for 11 keys.

11 keys

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Sale #25:

https://bot.tf/stats/item?def=31008&q=5&ef=Omniscient+Orb&craft=1&aus=0&ks=0

https://backpack.tf/profiles/76561198341171690#!/compare/1552518000/1552604400

Sold for 11 keys.

11 keys

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Sale #26:

https://bot.tf/stats/item?def=31008&q=5&ef=Omniscient+Orb&craft=1&aus=0&ks=0

https://backpack.tf/profiles/76561198335791307#!/compare/1549494000/1549580400

Sold for 8 keys and 2 ref.

8 keys

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Sale #27:

https://bot.tf/stats/item?def=31008&q=5&ef=Omniscient+Orb&craft=1&aus=0&ks=0

https://backpack.tf/profiles/76561198335791307#!/compare/1552431600/1552518000

Sold for 8 keys and 12 ref.

8.5 keys

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Sale #28:

https://marketplace.tf/items/31008;5;u120

Sold for $15.

$15 / $1.80 = ~8.5 keys

8.5 keys

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Sale #29:

https://marketplace.tf/items/31008;5;u120

Sold for $25.70.

$25.70 / $1.79 = ~14 keys

14 keys

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Sale #30:

https://marketplace.tf/items/31008;5;u120

Sold for $25.77.

$25.77 / $1.82 = ~14 keys

14 keys

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Sale #31:

https://marketplace.tf/items/31008;5;u120

Sold for $25.51.

$25.51 / $1.80 = ~14 keys

14 keys

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Sale #32:

https://marketplace.tf/items/31008;5;u120

Sold for $17.50.

$17.50 / $1.75 = 10 keys

10 keys

14 keys looks too high based on current sellers. 8.5 keys is quickbuying price.