Full Creds to: https://backpack.tf/suggestion/5b8ad9f1cf6c751f3578bc13

Cloud 9 Bonk Boy

Sale 1

Sold for a Blizzardy Storm Hong Kong Cone (61.5 keys) = 62 keys

https://backpack.tf/profiles/76561198148495750#!/compare/1533772800/1533859200

https://backpack.tf/profiles/76561198061464918#!/compare/1533772800/1533859200

Mini for the Hong Kong Cone

https://backpack.tf/suggestion/5b8aaf0a44325a5db22859ee

Sale 2

Sold with a C9 Lucky Shot (25 keys) for a Vivid Plasma Cat's Pajamas (still indate at 98 keys) = 98-25 keys = 73 keys

https://backpack.tf/profiles/76561198100722286#!/compare/1531785600/1531872000

https://backpack.tf/profiles/76561198095236132#!/compare/1531699200/1531785600

Sale 3

Sold for a Cloud 9 Lucky Shot (25 keys) and 37 keys = 62 keys

https://backpack.tf/profiles/76561198179707937#!/compare/1532649600/1532736000

https://backpack.tf/profiles/76561198132561543#!/compare/1532649600/1532736000

Since both sales need the Lucky Shot Mini I'll put it down here.

Mini for the Cloud 9 Lucky Shot

https://backpack.tf/suggestion/5b8ac35a44325a676a3611d0

Taking 25 keys

Sale 4

Sold for 75 keys

https://backpack.tf/profiles/76561198074924284#!/compare/1531785600/1531872000

https://backpack.tf/profiles/76561198119634347#!/compare/1531526400/1531872000

Sale 5

Sold for a Burning Flames Demoman's Fro (55.5 keys) = 56 keys

https://backpack.tf/profiles/76561198119634347#!/compare/1532563200/1532649600

https://backpack.tf/profiles/76561198061489334#!/compare/1532563200/1532649600

Sale 6

Bulk for Duped Smoking Antlers

https://backpack.tf/profiles/76561198085165993#!/compare/1532044800/1532563200

https://backpack.tf/profiles/76561198179707937#!/compare/1532390400/1532476800

Sale 7

Sold for a Sunbeams Airdog (30.5 keys) + ~35 keys in items = 65.5 keys = 66 keys

https://backpack.tf/profiles/76561198132561543#!/compare/1535328000/1535500800

https://backpack.tf/profiles/76561198054198170#!/compare/1535414400/1535500800

Mini for the Airdog

https://backpack.tf/suggestion/5b8ad5bd44325a707510d501

Taking 30.5 keys

Sale 8

Sold for a Spellbound Scotch Bonnet (better usable over there)

https://backpack.tf/profiles/76561198054198170#!/compare/1535673600/1535760000

https://backpack.tf/profiles/76561198299604510#!/compare/1535673600/1535760000

Sale 9

https://marketplace.tf/items/451;5;u58;strange

http://manic.tf/keyprice/?at=2018-08-10

Sold for $150 / $1.87 = 80.21 keys = 80 keys

Sale 10

Sold for a Nebula Head Full of Hot Air (70 keys)

https://backpack.tf/profiles/76561198292137994#!/compare/1529971200/1530057600

Buyers side traded too quickly

Sales: 56 / 62 / 62 / 66 / 70 / 73 / 75 / 80

Taking 62-75 as prev sugg said.