Sale 1:

https://backpack.tf/profiles/76561198096447036#!/compare/1572566400/1572739200

https://backpack.tf/profiles/76561198337734785#!/compare/1572652800/1572739200

QS

Sale 2:

https://backpack.tf/profiles/76561198337734785#!/compare/1573084800/1573171200

https://backpack.tf/profiles/76561198799365731#!/compare/1572825600/1573171200

Sold for 13 keys

Sale 3:

https://backpack.tf/profiles/76561198799365731#!/compare/1573171200/1573257600

https://backpack.tf/profiles/76561198994094366#!/compare/1573171200/1573257600

https://backpack.tf/profiles/76561198271049443#!/compare/1573084800/1573257600

https://backpack.tf/profiles/76561198089253101#!/compare/1573171200/1573257600

Untrace

Sale 4:

https://backpack.tf/profiles/76561198085364022#!/compare/1566086400/1566172800

https://backpack.tf/profiles/76561198365581972#!/compare/1566086400/1566172800

Sold with 4 keys for Searing Question

use there

https://bot.tf/stats/listings/4RGWP762

B/O of 21 keys

Sale 5:

https://backpack.tf/profiles/76561198365581972#!/compare/1567900800/1568678400

https://backpack.tf/profiles/76561198273345441#!/compare/1568246400/1568678400

Sold for Blizzardy Hedge

Hedge Mini:

https://backpack.tf/suggestion/5dca3273d381725fdc0fcf54

Suggestion for 9.5 keys

Sale 6:

https://backpack.tf/profiles/76561198273345441#!/compare/1568764800/1569369600

https://backpack.tf/profiles/76561198337734785#!/compare/1569283200/1569369600

QS for 11 keys

Sale 7:

https://backpack.tf/profiles/76561198024750552#!/compare/1565913600/1567814400

https://backpack.tf/profiles/76561198169444473#!/compare/1565740800/1565913600

Untrace

Sale 8:

https://backpack.tf/profiles/76561198169444473#!/compare/1565740800/1565913600

https://backpack.tf/profiles/76561198081791129#!/compare/1565913600/1566000000

Sold for ~17 keys in sweets

Sale 9:

https://backpack.tf/profiles/76561198119029207#!/compare/1565913600/1566086400

https://backpack.tf/profiles/76561198021055079#!/compare/1565827200/1565913600

QS

Sale 10:

https://backpack.tf/profiles/76561198197609521#!/compare/1565913600/1566000000

https://backpack.tf/profiles/76561198040186479#!/compare/1565913600/1566000000

SCM

Sale 11:

https://backpack.tf/profiles/76561198850348908#!/compare/1571529600/1571616000

https://backpack.tf/profiles/76561198002757046#!/compare/1572566400/1572739200

QS

Sale 12:

https://marketplace.tf/items/tf2/213;5;u61

$29.95 / $1.83 = 16.37 keys

$30 / $1.81 = 16.57 keys <-- https://backpack.tf/item/7956197192

Total sales @:

9.5, 11, 13, 16, 17, 17 keys

sellers down to ~13 keys,

aging unsold for 15 keys,

let's hesitantly take 13 - 17 keys.