https://marketplace.tf/items/tf2/359;5;u33

$29.9 / $1.79 = 16.70 keys

https://backpack.tf/profiles/76561198030697131#!/compare/1602892800/1602979200

https://backpack.tf/profiles/76561198400207211#!/compare/1602806400/1602892800

Seems to be bulk if it moved alongside keys and the OF Tyrant

https://backpack.tf/profiles/76561198400207211#!/compare/1602892800/1602979200

https://backpack.tf/profiles/76561198154572796#!/compare/1591488000/1602979200

Bulk, sold alongside the C9 Impaler for keys (2nd compare) then the Bat Hat was bought (1st compare)

https://backpack.tf/profiles/76561198154572796#!/compare/1591488000/1602979200

https://backpack.tf/profiles/76561198312449240#!/compare/1602892800/1602979200

13 keys + Flippin Awesome Taunt which would round this up to 14 keys

https://gyazo.com/e929ebb349e09b236b6eee6e277f4c72

https://backpack.tf/profiles/76561198312449240#!/compare/1602979200/1603065600

https://backpack.tf/profiles/76561198254822867#!/compare/1602979200/1603065600

Bulk

https://backpack.tf/profiles/76561198254822867#!/compare/1603065600/1603152000

https://backpack.tf/profiles/76561198069146785#!/compare/1602633600/1603238400

Open Mind Hephaistos' Handcraft + 1 key

https://backpack.tf/suggestion/5ffa18c573d97a6ee22a0557

Handcraft updating to 12.5, rounding sale to 14 keys

https://backpack.tf/profiles/76561198069146785#!/compare/1604016000/1604361600

https://backpack.tf/profiles/76561198195933333#!/compare/1604275200/1604361600

12 refined matches

https://backpack.tf/profiles/76561198195933333#!/compare/1604275200/1604361600

https://backpack.tf/profiles/76561198283298105#!/compare/1598486400/1605225600

This is the Marketplace sale

Sales

14

14

17