Rocket Man

https://backpack.tf/item/7301442087

Sale 1) Sold for 6 Keys + 24 Refined

https://backpack.tf/profiles/76561198056571743#!/compare/1553040000/1553817600

Rounds to 6.5 Keys

https://backpack.tf/item/6125365951

Sale 2) ?

https://backpack.tf/profiles/76561198145941518#!/compare/1554595200/1554768000

https://backpack.tf/profiles/76561198127215592#!/compare/1553299200/1555027200

Sale 3) ?

https://backpack.tf/profiles/76561198127215592#!/compare/1555027200/1555804800

https://backpack.tf/profiles/76561198095407289#!/compare/1555459200/1555632000

Sale 4) Sold for 4 Keys + 24 Refined

https://backpack.tf/profiles/76561198095407289#!/compare/1556323200/1556409600

Low outlier.

https://backpack.tf/item/5089481094

Sale 5) Sold for 8 Keys

https://backpack.tf/profiles/76561198125791160#!/compare/1554854400/1554940800

https://backpack.tf/profiles/76561198072164101#!/compare/1554940800/1555027200

https://backpack.tf/item/4598997889

Sale 6) Sold for 6 Keys + 26 Refined

https://backpack.tf/profiles/76561198170469718#!/compare/1552003200/1552089600

Rounds to 6.5 Keys

Sale 7) ?

https://backpack.tf/profiles/76561198305676157#!/compare/1552089600/1552176000

https://backpack.tf/profiles/76561198060898226#!/compare/1551657600/1552262400

Sale 8) ?

https://backpack.tf/profiles/76561198060898226#!/compare/1555632000/1555891200

https://backpack.tf/profiles/76561198305676157#!/compare/1555804800/1555891200

https://backpack.tf/item/4324037955

Sale 9) ?

https://backpack.tf/profiles/76561198083778611#!/compare/1552521600/1552953600

https://backpack.tf/profiles/76561198069694473#!/compare/1555027200/1555113600

Sale 10) Bulk sale

https://backpack.tf/profiles/76561198069694473#!/compare/1556496000/1556582400

https://backpack.tf/profiles/76561198236788328#!/compare/1556496000/1556582400

https://backpack.tf/item/4282453319

Sale 11) Sold for $19.99 when Keys were ~$1.80 each

https://marketplace.tf/items/30672;5;u3020

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

High outlier.

https://backpack.tf/item/4267925886

Sale 12) Bulk sale

https://backpack.tf/profiles/76561198146408824#!/compare/1556409600/1556582400

Sale 13) ?

https://backpack.tf/profiles/76561198282471428#!/compare/1556755200/1556841600

https://backpack.tf/profiles/76561198335791307#!/compare/1556755200/1556841600

https://backpack.tf/item/4261699305

Sale 14) ?

https://backpack.tf/profiles/76561198335806671#!/compare/1553731200/1553817600

https://backpack.tf/profiles/76561198340634356#!/compare/1553731200/1553817600

https://backpack.tf/item/4257682265

Sale 15) Quicksold for 6 Keys + 24 Refined

https://backpack.tf/profiles/76561198035450661#!/compare/1556064000/1556150400

Rounds to 6.5 Keys

https://backpack.tf/item/4425036288

Sale 16) Sold for 7 Keys + 36 Refined

https://backpack.tf/profiles/76561198340634356#!/compare/1552780800/1552867200

Rounds to 8 Keys.

Sale 17) Sold for 6 Keys

https://backpack.tf/profiles/76561198128164970#!/compare/1552867200/1552953600

https://backpack.tf/profiles/76561198305676157#!/compare/1552867200/1552953600

Low outlier.

Sale 18) Sold for 7 Keys + 26.11 Refined

https://backpack.tf/profiles/76561198305676157#!/compare/1555632000/1555718400

Rounds to 7.5 Keys

https://imgur.com/a/TZD7eWa - Sellers ranging from 7 - 8 Keys. Highest buyer at 6.5 Keys.

https://backpack.tf/item/4448527834

https://backpack.tf/item/5089481094

https://backpack.tf/item/4257682265

https://backpack.tf/item/4598997889

https://backpack.tf/item/4261699305

https://backpack.tf/item/4267925886

https://backpack.tf/item/4324037955

https://backpack.tf/u/76561198044684270 - The 6.5 Key buyer