https://backpack.tf/item/6786583764

https://backpack.tf/item/7957539322

https://backpack.tf/item/7956238489

Marketplace Sales:

8 July: ~15 Keys

24 June: ~18 Keys

21 May: ~17 Keys

11 May: ~17 Keys

25 April: ~15 Keys

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1.

https://backpack.tf/item/6786583764

Killua bought it for 11 keys and sold it for 12 keys

https://bot.tf/stats/item?def=342&q=5&ef=Kill-a-Watt&craft=1&aus=0&ks=0&source=browser_script

12 Keys 5 Ref sale:

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2.

https://backpack.tf/item/7957539322

https://backpack.tf/profiles/76561198301239435#!/compare/1585958400/1591228800

Untraceable

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3.

https://backpack.tf/profiles/76561198993873071#!/compare/1593993600/1594080000

Untraceable

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4.

https://backpack.tf/profiles/76561198993686702#!/compare/1593648000/1593734400

Untraceable

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5.

https://backpack.tf/profiles/76561198082611310#!/compare/1593475200/1593561600

Untraceable

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6.

https://backpack.tf/profiles/76561198215993605#!/compare/1593129600/1593216000

Untraceable

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7.

https://backpack.tf/profiles/76561198377165880#!/compare/1591920000/1592006400

Bulk sale

Taking 15-17