sale #1 - scm

https://backpack.tf/profiles/76561198136320884#!/compare/1584057600/1586908800

https://backpack.tf/profiles/76561198255105967#!/compare/1585612800/1587772800

sale #2 - https://marketplace.tf/items/tf2/30044;5;u62 | https://backpack.tf/item/7957555531 | ?

$24.99 / $1.68 = 14.88 keys

sale #3 - untrace

https://backpack.tf/profiles/76561199028769001#!/compare/1583712000/1586649600

https://backpack.tf/profiles/76561198142897025#!/compare/1583625600/1583712000

sale #3 - strange festive fish + strange festive eyelander + festive huntsman + festive ubersaw + strange festive fan + strange festive wrangler + strange festive black box

https://backpack.tf/profiles/76561199028769001#!/compare/1583712000/1583798400

https://backpack.tf/profiles/76561197996411898#!/compare/1583712000/1583798400

Taking 2.45 + 4.15 + 2.1 + 2 + 1.3 + 1 = 13 keys

sale #4 - bulk

https://backpack.tf/profiles/76561198859721638#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561197996411898#!/compare/1585094400/1585180800

sale #5 - 12 keys

https://backpack.tf/profiles/76561198859721638#!/compare/1587600000/1587686400

https://backpack.tf/profiles/76561198069800407#!/compare/1587600000/1587686400

sale #6 - use there

https://backpack.tf/profiles/76561198220098345#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198057180050#!/compare/1585267200/1585440000

sale #7 - 9 keys + 30 ref

https://backpack.tf/profiles/76561198220098345#!/compare/1587168000/1587254400

https://backpack.tf/profiles/76561198157688219#!/compare/1587168000/1587254400

sale #8 - use there

https://backpack.tf/profiles/76561198157688219#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561198125791160#!/compare/1587254400/1587340800

sale #9 - https://marketplace.tf/items/tf2/30044;5;u62 | https://backpack.tf/item/1996739930 | ?

$25 / $1.77 = 14.12 keys

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classi - https://gyazo.com/08a50c491a058475494601a039ad8595

gonna take 12 - 15 keys and call 9.7 an outlier for now