LogoNano BalaClava

https://backpack.tf/item/1887513396

Sale 1) Nano swap.

https://backpack.tf/profiles/76561198068634500#!/compare/1536796800/1542844800

https://backpack.tf/item/5341764445

Sale 2) Sold for 16 Keys

https://backpack.tf/profiles/76561198349886701#!/compare/1542326400/1542412800

High outlier.

Sale 3) Nano swap.

https://backpack.tf/profiles/76561198060225057#!/compare/1542326400/1542412800

https://backpack.tf/item/448425706

Sale 4) Sold for 10 Keys + 10.22 Refined

https://backpack.tf/profiles/76561198143969056#!/compare/1539043200/1539302400

https://backpack.tf/profiles/76561198382533813#!/compare/1539216000/1539302400 - The Steaming Toy Soldier sold for the 10 first

Low outlier.

Sale 5) Sold for an Orbiting Fire Big Country

https://backpack.tf/profiles/76561198382533813#!/compare/1539216000/1539302400

This would be better for the Big Country.

Sale 6) Quicksold for 10 Keys

https://backpack.tf/profiles/76561198097865704#!/compare/1539216000/1539302400

Sale 7) Sold for 13 Keys

https://backpack.tf/profiles/76561198278784183#!/compare/1539388800/1539475200

https://marketplace.tf/items/521;5;u11 - Sold for $22.99 when Keys were ~$1.84 each

22.99 / 1.84 = 12.49, which rounds to 12 Keys