https://marketplace.tf/items/tf2/31000;5;u112

$22.22 / $1.81 = 12.28 keys

https://backpack.tf/profiles/76561198978871427#!/compare/1603065600/1603238400

https://backpack.tf/profiles/76561198271577665#!/compare/1603152000/1603238400

Bulk

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

https://backpack.tf/profiles/76561198254822867#!/compare/1602633600/1602892800

Using on Orbiting Fire Samur-Eye

https://backpack.tf/profiles/76561198254822867#!/compare/1603152000/1603238400

https://backpack.tf/profiles/76561198142513689#!/compare/1603152000/1603238400

Untraceable

https://backpack.tf/profiles/76561198142513689#!/compare/1603670400/1603756800

https://backpack.tf/profiles/76561198119634686#!/compare/1603670400/1603756800

12 keys, 3 refined leaving the 2nd compare

https://backpack.tf/profiles/76561198119634686#!/compare/1608076800/1608163200

https://backpack.tf/profiles/76561198193808842#!/compare/1608076800/1608163200

59 item stack, which is 12 keys and 47 refined

https://backpack.tf/profiles/76561198193808842#!/compare/1608163200/1608422400

https://backpack.tf/profiles/76561198993631639#!/compare/1608076800/1608163200

Untraceable

https://backpack.tf/profiles/76561198047262260#!/compare/1608681600/1610150400

https://backpack.tf/profiles/76561198841279602#!/compare/1608595200/1608681600

Untraceable

https://backpack.tf/profiles/76561198841279602#!/compare/1609200000/1609286400

https://backpack.tf/profiles/76561198129223570#!/compare/1608940800/1609372800

4 keys matches

https://backpack.tf/profiles/76561198348738792#!/compare/1551052800/1606521600

https://backpack.tf/profiles/76561198363395191#!/compare/1606435200/1606521600

Untraceable

Nothing

https://backpack.tf/item/7277601645

https://backpack.tf/item/7269846046

https://backpack.tf/item/7258571615

https://backpack.tf/item/7335111660

https://backpack.tf/profiles/76561198123441069#!/compare/1606694400/1606780800

https://backpack.tf/profiles/76561198850121720#!/compare/1606608000/1606694400

Untraceable, went to quicksell.store

https://backpack.tf/profiles/76561198850121720#!/compare/1606780800/1606867200

https://backpack.tf/profiles/76561198934020885#!/compare/1605916800/1606867200

12 keys

https://backpack.tf/profiles/76561198934020885#!/compare/1606953600/1607731200

https://backpack.tf/profiles/76561199094458062#!/compare/1606867200/1606953600

12 keys and 11 refined

https://backpack.tf/profiles/76561199094458062#!/compare/1606953600/1607040000

https://backpack.tf/profiles/76561199004803157#!/compare/1606953600/1607040000

Untraceable

https://backpack.tf/profiles/76561199004803157#!/compare/1607558400/1607644800

https://backpack.tf/profiles/76561198259819412#!/compare/1607644800/1607731200

https://gyazo.com/6af4eb4acc4ffb2165ff503755c3aad5

https://gladiator.tf/sales?item=Open%20Mind%20Hephaistos%27%20Handcraft

13 keys

https://backpack.tf/profiles/76561198259819412#!/compare/1607990400/1608336000

https://backpack.tf/profiles/76561199102777012#!/compare/1607904000/1607990400

Untraceable

https://backpack.tf/profiles/76561199102777012#!/compare/1608163200/1608249600

https://backpack.tf/profiles/76561198272559112#!/compare/1608163200/1608336000

4 keys match, glad stats remember it as 13 keys

https://gyazo.com/6af4eb4acc4ffb2165ff503755c3aad5

https://gladiator.tf/sales?item=Open%20Mind%20Hephaistos%27%20Handcraft

Sales

12

12

12

12

13

13

13?

12-13