Credits Earth and Blaze

Item 1: https://backpack.tf/item/1759765762

Sale 1: https://backpack.tf/profiles/76561198087728099#!/compare/1644278400/1644364800

https://backpack.tf/profiles/76561198281630040#!/compare/1644278400/1644364800

Circling Heart Exquisite Rack for It's A Secret To Everybody Brown Bomber + Ominous Stare Missing Piece

Better to be used on the bomber & missing piece.

Sale 2: https://backpack.tf/profiles/76561198087728099#!/compare/1649289600/1649721600

https://backpack.tf/profiles/76561198106511423#!/compare/1649635200/1649721600

Sold for 530 keys.

Sale 3: https://backpack.tf/profiles/76561198106511423#!/compare/1651017600/1651276800

https://backpack.tf/profiles/76561198332723633#!/compare/1650931200/1651104000

Untraceable

Item 2: https://backpack.tf/item/264008868

Sale 4: https://mannco.store/item/440-circling-heart-unusual-exquisite-rack

$1000 / $1.58 = 632.91 keys

Sale 5: https://backpack.tf/profiles/76561198437716251#!/compare/1647907200/1648080000

Untraceable.

Sale 6: https://backpack.tf/profiles/76561198302622358#!/compare/1649721600/1649808000

https://backpack.tf/profiles/76561198139171368#!/compare/1649721600/1649808000

Being used on the ks brainiac

Blaze:

https://marketplace.tf/items/tf2/339;5;u19

https://backpack.tf/item/256374609 - sold for $1250 (706 keys)

https://backpack.tf/profiles/76561198139171368#!/compare/1652054400/1652140800

https://backpack.tf/profiles/76561198105071091#!/compare/1652054400/1652140800 - bulk

530 - 710 will work here

Another new sale:

https://marketplace.tf/items/tf2/339;5;u19

https://manic.tf/keyprice/?site=marketplace.tf&at=2022-06-09&price=1399.99

$1399.99 / $1.75 = 799.99 keys

Sales:

530

633

706

800

Going with 530 - 800 keys here.