Take 4:

Sale 1: Sold for 28 keys pure, Memory Leak Backbiter Billycock (16) and ~1.8 keys in items --> 45.8; rounding to 46

https://backpack.tf/profiles/76561198033161210#!/compare/1500249600/1500336000

Mini Billycock: https://backpack.tf/suggestion/597daf34cf6c751e884e5c75

https://gyazo.com/6d70bc80a9e1ea569c4bb7bcf639d446 (credits for screenshot go to Sprekt)

Sale 2: Sold for Mega Strike Taunt: Flippin' Awesome

https://backpack.tf/profiles/76561198069393071#!/compare/1499212800/1499385600

Should be used to update the taunt

Sale 3: Sold together with 15 keys for Terror-Watt Hong Kong Cone (54) --> 39

https://backpack.tf/profiles/76561198033161210#!/compare/1500681600/1500854400

https://backpack.tf/profiles/76561198140020052#!/compare/1500595200/1500681600 (credits to Blaze)

Sale 4: 49 keys pure (credits to King)

https://backpack.tf/profiles/76561198151117577#!/compare/1502668800/1502841600

https://backpack.tf/profiles/76561198064985984#!/compare/1502755200/1502841600

Sale 5: Sold for Steaming HKC (credits to King) --> 42

https://backpack.tf/profiles/76561198151117577#!/compare/1501891200/1501977600

https://backpack.tf/profiles/76561198289597770#!/compare/1501804800/1501891200

Sale 6: Sold for Secret Snaggle (credits to King)

https://backpack.tf/profiles/76561198259076751#!/compare/1502064000/1502150400

https://backpack.tf/profiles/76561198083872093#!/compare/1502064000/1502150400

King said it should be used on Snaggle here https://backpack.tf/suggestion/5980ba91cf6c7515983c7ee8

Going with 39-49