Sale 1:

Marketplace : https://marketplace.tf/items/tf2/30618;5;u3031

Jan 8: 7 / 1.79 = 4 keys

https://backpack.tf/item/4408118659

Sale 2 : Unusable

https://backpack.tf/item/4408118659

https://backpack.tf/profiles/76561198200096138#!/compare/1578528000/1578614400

Sale 3 : Unusable

https://backpack.tf/item/8368568321

https://backpack.tf/profiles/76561198363380973#!/compare/1577923200/1578009600

Sale 4 :

https://backpack.tf/item/8368568321

https://backpack.tf/profiles/76561198325595749#!/compare/1579651200/1579737600

Sold for a Skill Gotten Gains Taunt: The Boston Breakdance (outdated but way too low anyway) + sweets (20ref)

Sale 5 : Unusable

https://backpack.tf/item/8368568321

https://backpack.tf/profiles/76561198826254247#!/compare/1583020800/1583107200

Sale 6 : Unusable

https://backpack.tf/item/4455621219

https://backpack.tf/profiles/76561198355682216#!/compare/1578096000/1578355200

Sale 7 :

https://backpack.tf/item/4455621219

https://backpack.tf/profiles/76561198072046829#!/compare/1578528000/1578614400

Sold for 5 keys

Sale 8 :

https://backpack.tf/item/4455621219

https://backpack.tf/profiles/76561198319033237#!/compare/1578700800/1579132800

Sold for a Professional Killstreak Crusader's Crossbow Kit = 7 keys

For the kit : https://marketplace.tf/items/tf2/6526;6;uncraftable;kt-3;td-305

Sales for the past month at :

10.02

15.49

10.01

12 x 5

25

12.74

13

Avg of 12.1 without counting the 25$ outlier. 12.1 / 1.69 = 7 keys

Sale 9 : Unusable

https://backpack.tf/profiles/76561198135124581#!/compare/1579132800/1579219200

Sale 10 : Unusable

https://backpack.tf/item/4429155128

https://backpack.tf/profiles/76561198205338192#!/compare/1580169600/1580515200

Sale 11 : Unusable

https://backpack.tf/item/4424888198

https://backpack.tf/profiles/76561198325958015#!/compare/1579219200/1581120000

Currently three sellers on MP at $9.90 and $10 which comes out to be around 5.9 keys

sales are

4

5

7

4 is really close to buy orders at $6.21-$6.69

and 7 is over three lower sellers

Pricing it at 5 keys.

PS : Big thanks to Offline for the help