My cat is not peaceful.

https://backpack.tf/item/918039684

Sale 1) Sold for a Kill-a-Watt Pampered Pyro (15 Keys) + ~3 Keys of Items + 1 Key

https://backpack.tf/profiles/76561198202554772#!/compare/1512604800/1512691200

15 + 3 + 1 = 19 Keys

Pampered Mini

https://backpack.tf/profiles/76561198087511120#!/compare/1512604800/1512691200 - Sold for 12 Keys

https://backpack.tf/profiles/76561198068701324#!/compare/1512604800/1512691200 - Sold + 1 Key for a Max's Severed Head (~19 Keys)

https://backpack.tf/item/5489611231

Sale 2) Sold + 5 Keys for a Circling Peace Sign A Rather Festive Tree (25.5 Keys)

https://backpack.tf/profiles/76561198150888146#!/compare/1510963200/1511481600

25.5 - 5 = 20.5, which rounds to 21 Keys

Tree Mini

https://backpack.tf/suggestion/5a356c3744325a5ad9293cfa - 25.5 Keys

Sale 3) Sold for an Orbiting Fire A Hat to Kill For

https://backpack.tf/profiles/76561198146883929#!/compare/1512086400/1512259200

I could not find any Mini between these 2 Hats to Kill For: https://backpack.tf/item/4658709202 and https://backpack.tf/item/4571219873

Sale 4) Sold for 20 Keys + <0.5 Keys of Refined

https://backpack.tf/profiles/76561198123271612#!/compare/1513209600/1513296000

Rounds to 20 Keys

https://backpack.tf/item/377501276

Sale 5) Sold for a Cloud 9 Large Luchadore + 13 Keys

https://backpack.tf/profiles/76561197963500354#!/compare/1507161600/1507248000 - Seller's Backpack

https://backpack.tf/profiles/76561198045370191#!/compare/1507248000/1507939200 - Buyer's Backpack

High Outlier.

Sale 6) Sold for a Kill-a-Watt Jumper's Jeepcap (17.5 Keys) + 2 Keys

https://backpack.tf/profiles/76561198112208406#!/compare/1510531200/1510617600

17.5 + 2 = 19.5, which rounds to 20 Keys

Jeepcap Mini

https://backpack.tf/suggestion/5a348b5bcf6c7526df3b3f32 - 17.5 Keys

Sale 7) Quicksold for 18 Keys + >0.5 Keys of Refined

https://backpack.tf/profiles/76561198137888552#!/compare/1510531200/1510617600

Sale 8) Sold for 21 Keys

https://backpack.tf/profiles/76561198045692488#!/compare/1512086400/1512172800 - Seller's Backpack

https://backpack.tf/profiles/76561198211967715#!/compare/1512172800/1512259200 - Buyer's Backpack

The Scattergun in the Buyer's Backpack sold for 23 Keys, 21 of which were used to buy the Noble.

https://backpack.tf/item/170994935

Sale 9) Sold for a Tesla Coil Helmet Without a Home

https://backpack.tf/profiles/76561198048312212#!/compare/1507852800/1507939200

Pricing the Helmet with this sale.

Sale 10) Sold for a Kill-a-Watt Human Cannonball + 2 Keys

https://backpack.tf/profiles/76561197964171516#!/compare/1511049600/1511136000

Pricing the Cannonball with this sale.

Sale 11) Sold for a Kill-a-Watt Hottie's Hoodie

https://backpack.tf/profiles/76561198110463574#!/compare/1512086400/1512259200

The only other sale on the Hoodie is for 14 Keys + 10 Refined, but this A) was nearly 3 Months ago and B) to a quickbuyer. This sale can be used to price that.