https://backpack.tf/item/1797653465

Sale 1) ?

https://backpack.tf/profiles/76561198339195932#!/compare/1606348800/1607731200

https://backpack.tf/profiles/76561198881960845#!/compare/1606867200/1607472000

Sale 2) ?

https://backpack.tf/profiles/76561198881960845#!/compare/1608163200/1608940800

https://backpack.tf/item/9203489562

Sale 3) Sold for 9 Keys + 4 Refined

https://backpack.tf/profiles/76561198341860529#!/compare/1605312000/1605657600

Sale 4) Bulk sale

https://backpack.tf/profiles/76561198145072434#!/compare/1606003200/1606089600

Sale 5) Bulk sale

https://backpack.tf/profiles/76561198145072434#!/compare/1607731200/1607904000

Sale 6) ?

https://backpack.tf/profiles/76561198850121720#!/compare/1610582400/1610668800

https://backpack.tf/profiles/76561198108716961#!/compare/1610582400/1610668800

Sale 7) ?

https://backpack.tf/profiles/76561198108716961#!/compare/1610668800/1610755200

https://backpack.tf/profiles/76561198886850124#!/compare/1610668800/1610755200

https://backpack.tf/item/7957625897

Sale 8) ?

https://backpack.tf/profiles/76561198030589062#!/compare/1607385600/1608249600

https://backpack.tf/item/7956151945

Sale 9) Sold for a Green Confetti Tsarboosh (7.5 Keys)

https://backpack.tf/profiles/76561198817932058#!/compare/1603497600/1603584000

https://backpack.tf/profiles/76561198202984697#!/compare/1603411200/1603584000

Tsarboosh Mini

https://backpack.tf/suggestion/60034a30ef184616bd5bfa84

Sale 10) ?

https://backpack.tf/profiles/76561198202984697#!/compare/1603584000/1604793600

https://backpack.tf/profiles/76561198801575166#!/compare/1603843200/1607644800

Sale 11) Sold for a Strange Pro KS Pistol (~4 Keys) + ~2 Keys of Items

https://backpack.tf/profiles/76561198801575166#!/compare/1607644800/1607904000

Low outlier.

https://backpack.tf/item/7956173141

Sale 12) ?

https://backpack.tf/profiles/76561198069463421#!/compare/1603584000/1605312000

https://backpack.tf/profiles/76561198240965542#!/compare/1605484800/1605571200

Sale 13) Bulk sale

https://backpack.tf/profiles/76561198240965542#!/compare/1605571200/1605657600

Sale 14) Sold for 9 Keys + 0.66 Refined

https://backpack.tf/profiles/76561198173442901#!/compare/1605571200/1605657600

Rounds to 9 Keys

Sale 15) Sold for $16.69 when Keys were ~$1.85 each

https://mannco.store/item/16401

16.69 / 1.85 = 9.02, which rounds to 9 Keys

Sale 16) ?

https://backpack.tf/profiles/76561198084813853#!/compare/1610064000/1610150400

https://backpack.tf/profiles/76561198131066806#!/compare/1609977600/1610064000

Sale 17) ?

https://backpack.tf/profiles/76561198131066806#!/compare/1610064000/1610150400

https://backpack.tf/profiles/76561198035582739#!/compare/1609891200/1610150400

Sale 18) ?

https://backpack.tf/profiles/76561198035582739#!/compare/1610236800/1610496000

https://imgur.com/a/NA8ZW3V - Gladiator.tf sale at 6.45 Keys

This is buy order price, so it can be excluded.

Credits to Shuffle Spy