Sale 1:

https://backpack.tf/profiles/76561198323565601#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198283665350#!/compare/1581811200/1581897600

Sold for 7 keys

Sale 2:

https://backpack.tf/profiles/76561198283665350#!/compare/1582416000/1582502400

https://backpack.tf/profiles/76561198850895547#!/compare/1582502400/1582588800

Sold with 4 keys for Smoking Napper

use there

sale 3:

https://backpack.tf/profiles/76561198850895547#!/compare/1583625600/1583712000

https://backpack.tf/profiles/76561198796395930#!/compare/1583625600/1583712000

Bulk

Sale 4:

https://backpack.tf/profiles/76561198796395930#!/compare/1583625600/1583712000

https://backpack.tf/profiles/76561198053758441#!/compare/1581465600/1583712000

https://backpack.tf/profiles/76561198059874094#!/compare/1583625600/1583712000

Bulk and bulk

sale 5:

https://backpack.tf/profiles/76561198059874094#!/compare/1583712000/1583798400

https://backpack.tf/profiles/76561199028769001#!/compare/1583712000/1583798400

Sold for 7 keys

sale 8:

https://backpack.tf/profiles/76561199028769001#!/compare/1583798400/1583884800

https://backpack.tf/profiles/76561198796395930#!/compare/1583798400/1583884800

Untrace

sale 9:

https://backpack.tf/profiles/76561198053637760#!/compare/1584057600/1584230400

https://backpack.tf/profiles/76561198826254247#!/compare/1583884800/1584057600

Bulk

sale 10:

https://backpack.tf/profiles/76561198826254247#!/compare/1584144000/1584230400

https://backpack.tf/profiles/76561198812543484#!/compare/1584144000/1584230400

Bulk

sale 11:

https://backpack.tf/profiles/76561198812543484#!/compare/1584835200/1585008000

https://backpack.tf/profiles/76561198121191976#!/compare/1584921600/1585008000

Sold for ~7 keys

sale 12:

https://backpack.tf/profiles/76561198121191976#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198929043238#!/compare/1585008000/1585180800

High / untrace

sale 13:

https://backpack.tf/profiles/76561198929043238#!/compare/1585008000/1585180800

https://backpack.tf/profiles/76561198798943946#!/compare/1579305600/1585180800

Sold for ~6 keys

Sale 14:

https://backpack.tf/profiles/76561198798943946#!/compare/1585180800/1585267200

https://backpack.tf/profiles/76561198393557744#!/compare/1584230400/1585180800

Sold for ~4.3 keys in sweets

Sale 15:

https://marketplace.tf/items/tf2/30091;5;u35

$21.99 / $1.69 = 13.01 keys

https://backpack.tf/item/6694267876

Total sales @:

4.3, 6, 7, 7, 7, 13 keys

buyers up to ~6.5 keys,

seller at 12 keys,

calling 6 low, 13 high,

taking 7 flat.