https://marketplace.tf/items/tf2/30375;5;u58

$59.40 = 33 keys

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https://backpack.tf/profiles/76561198337734785#!/compare/1583971200/1584057600

https://backpack.tf/profiles/76561198975635935#!/compare/1578096000/1584921600

Untraceable

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https://backpack.tf/profiles/76561198081973834#!/compare/1576195200/1585267200

https://backpack.tf/profiles/76561198011321852#!/compare/1585180800/1585267200

Untraceable

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https://backpack.tf/profiles/76561198884260777#!/compare/1581811200/1583020800

https://backpack.tf/profiles/76561198311498888#!/compare/1581724800/1581811200

QS to stn.tf

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https://backpack.tf/profiles/76561198149682389#!/compare/1584576000/1586908800

https://backpack.tf/profiles/76561198241443196#!/compare/1586736000/1586908800

Not bulk but better used there

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https://backpack.tf/profiles/76561198028151043#!/compare/1587254400/1587513600

https://backpack.tf/profiles/76561198113889163#!/compare/1587168000/1587254400

22 keys

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https://backpack.tf/profiles/76561199013669133#!/compare/1586390400/1586563200

https://backpack.tf/profiles/76561198805549376#!/compare/1586476800/1586563200

32 keys

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https://backpack.tf/profiles/76561198805549376#!/compare/1586563200/1586736000

https://backpack.tf/profiles/76561198149038047#!/compare/1586563200/1586736000

Untraceable

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https://backpack.tf/profiles/76561198149038047#!/compare/1586736000/1586822400

https://backpack.tf/profiles/76561198930980395#!/compare/1586736000/1586822400

Blizzardy Hotrod + 13 keys

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https://backpack.tf/profiles/76561198400192311#!/compare/1586736000/1586908800

https://backpack.tf/profiles/76561198930980395#!/compare/1586822400/1586908800

Added 1 key for Green Confetti Master's Yellow Belt

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https://backpack.tf/profiles/76561198081965657#!/compare/1584316800/1586131200

https://backpack.tf/profiles/76561198281630040#!/compare/1584316800/1584489600

Untraceable

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https://backpack.tf/profiles/76561198281630040#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198966838493#!/compare/1586131200/1586217600

Might be 20 keys, but nothing aside from it looks like it prove so

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https://backpack.tf/profiles/76561198966838493#!/compare/1586217600/1586736000

https://backpack.tf/profiles/76561198322560312#!/compare/1586131200/1586217600

Untraceable

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https://backpack.tf/profiles/76561198302201202#!/compare/1586390400/1587081600

https://backpack.tf/profiles/76561198281630040#!/compare/1586304000/1586390400

Untraceable

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https://backpack.tf/profiles/76561198281630040#!/compare/1586304000/1586390400

https://backpack.tf/profiles/76561198850274253#!/compare/1586304000/1586390400

Bulk for keys

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https://backpack.tf/profiles/76561198850274253#!/compare/1586649600/1586736000

https://backpack.tf/profiles/76561198091921229#!/compare/1586649600/1586736000

I don't know

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https://backpack.tf/profiles/76561198032986467#!/compare/1586908800/1587081600

https://backpack.tf/profiles/76561198091921229#!/compare/1586995200/1587081600

29 keys

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https://backpack.tf/profiles/76561198032986467#!/compare/1587859200/1587945600

https://backpack.tf/profiles/76561198357093059#!/compare/1587772800/1587859200

Looks like 20 keys + 46 refined

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https://gyazo.com/98cae43e5e27907ce01bc82b87f8ce2f

Sellers: 30 (young), 33 (young), 35 (young)

Buyers: 20-21 keys

21

22

29

32

33

Going with 29-33