Resuggestion from https://backpack.tf/suggestion/5ecac0a159e6a60fca60ae42

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https://marketplace.tf/items/tf2/30805;5;u19

$27.1 / $1.69 = 16.04 keys

$35 / $2.01 = 17.4 keys

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https://backpack.tf/profiles/76561198869506063#!/compare/1588464000/1588636800

https://backpack.tf/profiles/76561198011700960#!/compare/1588550400/1588723200

Bulk

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https://backpack.tf/profiles/76561198045232326#!/compare/1584921600/1585094400

https://backpack.tf/profiles/76561198322560312#!/compare/1585008000/1585094400

Untraceable

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https://backpack.tf/profiles/76561198322560312#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198177719569#!/compare/1585008000/1585094400

Untraceable

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https://backpack.tf/profiles/76561198177719569#!/compare/1585612800/1585699200

https://backpack.tf/profiles/76561197984373540#!/compare/1585526400/1585612800

Untraceable

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https://backpack.tf/profiles/76561197984373540#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198950621219#!/compare/1585699200/1585785600

Untraceable

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https://backpack.tf/profiles/76561198950621219#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198966838493#!/compare/1585699200/1585872000

Untraceable

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https://backpack.tf/profiles/76561198966838493#!/compare/1585872000/1586131200

https://backpack.tf/profiles/76561198150268365#!/compare/1585785600/1585872000

Untraceable

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https://backpack.tf/profiles/76561198150268365#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561199004492301#!/compare/1585785600/1585872000

Untraceable

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https://backpack.tf/profiles/76561199004492301#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561198176022675#!/compare/1585872000/1585958400

Untraceable

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https://backpack.tf/profiles/76561198176022675#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561198115233455#!/compare/1585958400/1586044800

Untraceable

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https://backpack.tf/profiles/76561198115233455#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198115699456#!/compare/1585958400/1586044800

Low/Untraceable

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https://backpack.tf/profiles/76561198115699456#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198316907092#!/compare/1483401600/1586131200

Untraceable

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https://backpack.tf/profiles/76561198316907092#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198065749444#!/compare/1586131200/1586217600

Added 1 key sweet + 3 keys for Nether Trail Hellmet (30 keys) https://backpack.tf/suggestion/5eaced24164c640728550003

Sale = 27 keys

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https://backpack.tf/profiles/76561198065749444#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198219205067#!/compare/1586649600/1586736000

Untraceable

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https://backpack.tf/profiles/76561198219205067#!/compare/1586736000/1587168000

https://backpack.tf/profiles/76561198069493147#!/compare/1586736000/1586822400

Untraceable

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https://backpack.tf/profiles/76561198069493147#!/compare/1586822400/1586908800

https://backpack.tf/profiles/76561198375290326#!/compare/1586822400/1586908800

Untraceable

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https://backpack.tf/profiles/76561198375290326#!/compare/1586822400/1586908800

https://backpack.tf/profiles/76561198304302520#!/compare/1586822400/1586908800

Untraceable

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https://backpack.tf/profiles/76561198869506063#!/compare/1591056000/1591142400

https://backpack.tf/profiles/76561198195734346#!/compare/1591056000/1591142400

Bulk, then transfer to bot

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https://backpack.tf/profiles/76561198847672167#!/compare/1591488000/1591660800

https://backpack.tf/profiles/76561198143284244#!/compare/1589932800/1591660800

15 keys, sold in 1 day according to bot owner

https://backpack.tf/suggestion/5ecac0a159e6a60fca60ae42

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sales:

15

16

17

28

despite 15 selling in 1 day, 16 and 17 took longer than it and are very close to 15

going with 15-17