I should make my rap name Green Onion so I'm a rapscallion.

https://backpack.tf/item/6375274429

Sale 1) Sold + ~6 Keys of Items + 1 Key for a Haunted Ghosts Killer's Kabuto (44.5 Keys)

https://backpack.tf/profiles/76561198067948618#!/compare/1512604800/1512691200

44.5 - 6 - 1 = 37.5, which rounds to 38 Keys.

https://backpack.tf/item/5289835782

Sale 2) Sold for 29 Keys

https://backpack.tf/profiles/76561198122107265#!/compare/1510358400/1510444800

https://backpack.tf/item/5087602617

Sale 3) Sold for a Smoking Coldsnap Cap

https://backpack.tf/profiles/76561198079609540#!/compare/1511827200/1511913600

High Outlier.

Sale 4) Sold + ~1 Key of Items for a Blizzardy Storm Powdered Practitioner (19.5 Keys) + Blizzardy Storm German Gonzilla (12.5 Keys)

https://backpack.tf/profiles/76561198155841401#!/compare/1512000000/1512086400

19.5 + 12.5 - 1 = 31 Keys

Powdered Mini

https://backpack.tf/suggestion/5a2c968944325a5b9259fd6d - 19.5 Keys

Gonzilla Mini

https://backpack.tf/suggestion/5a2c9314cf6c7536f2092c0f - 12.5 Keys

Sale 5) Sold + 3 Keys + ~2 Keys of Items for a Searing Plasma Runner's Warm-Up

https://backpack.tf/profiles/76561198094132328#!/compare/1512000000/1512086400

http://www.tf2outpost.com/trade/29462284 - Capped by the Buyout of 33 Keys

Sale 6) Sold for a Duped Flaming Lantern Gentleman's Ushanka (30 Keys

https://backpack.tf/profiles/76561198145496194#!/compare/1512432000/1512604800

Ushanka Mini

https://backpack.tf/profiles/76561198037947164#!/compare/1512518400/1512604800 - Sold for a Stormy Storm Ground Control (30 Keys)

Ground Macro

https://backpack.tf/suggestion/5a2ca62ecf6c757de67faf6c - 30 Keys

Sale 7) Sold for a Disco Beat Down Armored Authority (27.5 Keys) + 4 Keys

https://backpack.tf/profiles/76561198133040286#!/compare/1512691200/1512864000

27.5 + 4 = 31.5, which rounds to 32 Keys

Armored Mini

https://backpack.tf/suggestion/5a2cab1a44325a4496096b6c - 27.5 Keys

Including 38 Keys because of the Coldsnap sale supporting it.