Kill-a-Watt Frickin' Sweet Ninja Hood

Sale 1

https://backpack.tf/profiles/76561198136662495#!/compare/1589414400/1589760000

https://backpack.tf/profiles/76561197999188384#!/compare/1589500800/1589760000

Untraceable

Sale 2

https://backpack.tf/profiles/76561197999188384#!/compare/1589760000/1589846400

https://backpack.tf/profiles/76561198415967857#!/compare/1589846400/1589932800

Untrace

Sale 3

https://backpack.tf/profiles/76561198864285626#!/compare/1590710400/1590883200

https://backpack.tf/profiles/76561198080179568#!/compare/1590710400/1590796800

Untraceable

Marketplace sales: https://marketplace.tf/items/tf2/30394;5;u56

1. Sold on 4/16/2020 for $35.99 / $1.78 = 20.22 keys ~ 20 (https://backpack.tf/item/7955873609)

2. Sold on 4/20/2020 for $35.99 / $1.79 = 20.11 keys ~ 20

3. Sold on 4/28/2020 for $23.17 / $1.82 = 12.73 keys (Buy order price, excluded)

4. Sold on 5/23/2020 for $36.99 / $1.90 = 19.47 keys ~ 19 keys

Sales at 20, 20, 19. Taking 19 - 20 keys.