https://marketplace.tf/items/tf2/30921;5;u3001

Dec 13 - $10.52 / $1.92 = 5.48 keys

Dec 18 - $12.00 / $2.01 = 5.97 keys

https://backpack.tf/profiles/76561198443800184#!/compare/1607126400/1607299200

https://backpack.tf/profiles/76561198848857784#!/compare/1606867200/1607126400

Bulk

https://backpack.tf/profiles/76561198848857784#!/compare/1606867200/1607126400

https://backpack.tf/profiles/76561198841279602#!/compare/1607040000/1607126400

Untraceable

https://backpack.tf/profiles/76561198841279602#!/compare/1607644800/1607731200

https://backpack.tf/profiles/76561198993631639#!/compare/1607644800/1607731200

Untraceable

https://backpack.tf/profiles/76561198993631639#!/compare/1609459200/1609545600

https://backpack.tf/profiles/76561199025403420#!/compare/1609459200/1609545600

Untraceable

https://backpack.tf/profiles/76561198257593711#!/compare/1606608000/1607472000

https://backpack.tf/profiles/76561198429470944#!/compare/1611360000/1611360000

Untraceable

https://backpack.tf/profiles/76561197963500354#!/compare/1607990400/1608076800

https://backpack.tf/profiles/76561199048949745#!/compare/1612396800/1612396800

Untraceable

https://backpack.tf/profiles/76561198362373891#!/compare/1608595200/1608681600

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

only a key and some change matches

https://backpack.tf/profiles/76561198841279602#!/compare/1610409600/1610496000

https://backpack.tf/profiles/76561198050518375#!/compare/1610409600/1610496000

Untraceable

https://backpack.tf/profiles/76561198132982756#!/compare/1605657600/1605830400

https://backpack.tf/profiles/76561198280693486#!/compare/1605657600/1605744000

Untraceable

https://backpack.tf/profiles/76561198280693486#!/compare/1607731200/1607817600

https://backpack.tf/profiles/76561198993631639#!/compare/1607731200/1607817600

https://cdn.discordapp.com/attachments/653736881464410153/808064706585165875/unknown.png

4 keys, 30.44 refined

Rounds to 4.6 keys

https://backpack.tf/profiles/76561198993631639#!/compare/1608595200/1608768000

https://backpack.tf/profiles/76561198170571474#!/compare/1606089600/1608854400

Untraceable

https://backpack.tf/profiles/76561198163482215#!/compare/1611619200/1611705600

https://backpack.tf/profiles/76561198004952793#!/compare/1611446400/1611705600

Bulk

https://backpack.tf/profiles/76561198004952793#!/compare/1612224000/1612396800

https://backpack.tf/profiles/76561198871991175#!/compare/1612396800/1612483200

8 keys

https://backpack.tf/profiles/76561198118802562#!/compare/1605916800/1606003200

https://backpack.tf/profiles/76561198453530349#!/compare/1605830400/1605916800

Untraceable

https://backpack.tf/profiles/76561198453530349#!/compare/1606348800/1606435200

https://backpack.tf/profiles/76561198448885203#!/compare/1606003200/1606435200

Untraceable

https://backpack.tf/profiles/76561198448885203#!/compare/1610064000/1610150400

https://backpack.tf/profiles/76561199004803157#!/compare/1609977600/1610064000

Untraceable

https://backpack.tf/profiles/76561199004803157#!/compare/1610496000/1610582400

https://backpack.tf/profiles/76561198241424358#!/compare/1610496000/1610668800

3 keys matches, gladiator stats confirm 5 keys

https://gyazo.com/83612a2ce02064044097cdc71478de34

https://backpack.tf/profiles/76561198850121720#!/compare/1607558400/1607644800

https://backpack.tf/profiles/76561199096468376#!/compare/1608768000/1611187200

Untraceable

https://backpack.tf/profiles/76561198134624832#!/compare/1605830400/1606608000

https://backpack.tf/profiles/76561198342161127#!/compare/1606521600/1606608000

Bulk

https://backpack.tf/profiles/76561198342161127#!/compare/1610496000/1610582400

https://backpack.tf/profiles/76561198032697880#!/compare/1608508800/1612396800

Bulk

Sales

4.6

5

5.5

6

8

https://gyazo.com/6fdca0eb02dc47ee52585ea0a939fa9e

Young seller at 5.35

lets go with 4.6-6 for now

I will be back to re-evaluate this suggestion with additional proof