Sale #1 - 40 keys 7 ref

https://backpack.tf/profiles/76561198119601623#!/compare/1563494400/1564012800

https://backpack.tf/profiles/76561198341171690#!/compare/1563494400/1563580800

Sale #2 - https://marketplace.tf/items/tf2/31003;5;u115 | https://backpack.tf/item/7706513589 | No clue on a b/o

99/1.82=54 keys

Sale #3 - HG Warhood + DBD Tavish + Tiger Killer Solo

https://backpack.tf/profiles/76561198157680604#!/compare/1563753600/1563840000

https://backpack.tf/profiles/76561198066815050#!/compare/1563753600/1563840000

Taking 23.5 + 23.5 + 7 = 54 keys

Warhood mini - https://backpack.tf/suggestion/5d61bb59d3817276b01029c7

Tavish mini - https://backpack.tf/suggestion/5d61b621678072117324d234

Killer solo micro - https://marketplace.tf/items/tf2/30609;5;u3006

$12.6 / $1.82 = 6.92 keys

$12.6 / $1.84 = 6.85 keys

Taking 7 keys for the killer solo

b/o was 55 keys

https://bot.tf/stats/listings/MVVZPOVM

Sale #4 - Bulk for burning rotation

https://backpack.tf/profiles/76561198149240383#!/compare/1561680000/1561766400

https://backpack.tf/profiles/76561198131452826#!/compare/1561680000/1561766400

Sale #5 - 45 keys

https://backpack.tf/profiles/76561198131452826#!/compare/1563408000/1563494400

https://backpack.tf/profiles/76561198061275415#!/compare/1563408000/1563667200

Sale #6 - Sold with a Pfetti Woodsman for a eerie rotation + 2 keys + 2 key sweet (Use on rotation)

https://backpack.tf/profiles/76561198156255538#!/compare/1562544000/1562630400

https://backpack.tf/profiles/76561198127540887#!/compare/1562544000/1562630400

Sale #7 - Bulk

https://backpack.tf/profiles/76561198362008411#!/compare/1563235200/1563321600

https://backpack.tf/profiles/76561198126679929#!/compare/1563235200/1563321600

Sale #8 - Untrace

https://backpack.tf/profiles/76561198362008411#!/compare/1563235200/1563321600

https://backpack.tf/profiles/76561198061275415#!/compare/1563062400/1563321600

Sale #9 - https://marketplace.tf/items/tf2/31003;5;u115 | No idea on the history | No idea who the seller was

95 / 1.84 = 51.6, rounded to 52 keys

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Taking 52 - 54 keys

Excluding 40 due to being a buy order - https://bot.tf/stats/listings/Y9GZX010

Excluding 45 due to also being a buy order - https://bot.tf/stats/listings/Y5REJDO5