Sale 1:

https://backpack.tf/profiles/76561198423334519#!/compare/1567296000/1567382400

https://backpack.tf/profiles/76561198273279626#!/compare/1534636800/1567296000

https://backpack.tf/profiles/76561198423334519#!/compare/1567296000/1567382400

tradeback

Sale 2:

https://backpack.tf/profiles/76561198423334519#!/compare/1567296000/1567382400

https://backpack.tf/profiles/76561198075505769#!/compare/1567296000/1567382400

Sold for C9 Bottle + 3 keys

use there

sale 3:

https://backpack.tf/profiles/76561198004952793#!/compare/1566086400/1566172800

https://backpack.tf/profiles/76561198074939855#!/compare/1566086400/1566172800

Sold in bulk

Sale 4:

https://backpack.tf/profiles/76561198074939855#!/compare/1566086400/1566172800

https://backpack.tf/profiles/76561198046751901#!/compare/1566086400/1566172800

Sold for C9 Ninja Hood

Ninja Mini:

https://backpack.tf/suggestion/5d93ba6d67807271ac289175

Suggestion for 20 keys

Sale 5:

https://backpack.tf/profiles/76561198046751901#!/compare/1566259200/1566345600

https://backpack.tf/profiles/76561198021867575#!/compare/1566259200/1566345600

Sold for Miami Noble

use there, hit by Crate Depression

Sale 6:

https://backpack.tf/profiles/76561198021867575#!/compare/1567296000/1567468800

https://backpack.tf/profiles/76561198140818564#!/compare/1567382400/1567468800

Sold for 15 keys

Sale 7:

https://backpack.tf/profiles/76561198140818564#!/compare/1567382400/1567468800

https://backpack.tf/profiles/76561198118219233#!/compare/1567382400/1567468800

Sold for 18 keys

Sale 8:

https://backpack.tf/profiles/76561198118219233#!/compare/1567382400/1567468800

https://backpack.tf/profiles/76561198141949945#!/compare/1567382400/1567468800

Sold for HG Tippler(21)

Sale 9:

https://backpack.tf/profiles/76561198141949945#!/compare/1567468800/1567555200

https://backpack.tf/profiles/76561198280448275#!/compare/1567468800/1567555200

Sold for C9 Eyewear --> https://backpack.tf/item/7068587276

Eyewear:

https://backpack.tf/suggestion/5d86f6bd67807233040d5dd1

Suggestion for 21.5 keys

Sale 10:

https://marketplace.tf/items/tf2/30332;5;u11

$31 / $1.82 = 17.03 keys

Total sales @:

15, 17.03, 18, 20, 21, 21.5 keys

considering 15 resold for 18 resold for 21 quickly,

calling 15 low,

taking 17 - 22 keys