Sale 1:

https://backpack.tf/profiles/76561198366776306#!/compare/1587859200/1588032000

https://backpack.tf/profiles/76561198057816579#!/compare/1479340800/1588032000

Untrace

sale 2:

https://backpack.tf/profiles/76561198057816579#!/compare/1588032000/1588118400

https://backpack.tf/profiles/76561198123224716#!/compare/1588032000/1588118400

Bulk

sale 3:

https://backpack.tf/profiles/76561198123224716#!/compare/1588204800/1588291200

https://backpack.tf/profiles/76561198277130291#!/compare/1588204800/1588291200

https://backpack.tf/profiles/76561198146259385#!/compare/1588204800/1588291200

untrace then bulk

sale 4:

https://backpack.tf/profiles/76561198146259385#!/compare/1588204800/1588291200

https://backpack.tf/profiles/76561198221666984#!/compare/1588118400/1588291200

Sold for 8 keys

sale 5:

https://backpack.tf/profiles/76561198221666984#!/compare/1588118400/1588291200

https://backpack.tf/profiles/76561198251713434#!/compare/1588291200/1588464000

Untrace / bulk

sale 6:

https://backpack.tf/profiles/76561198251713434#!/compare/1588464000/1588550400

https://backpack.tf/profiles/76561198206831569#!/compare/1588464000/1588550400

Sold for either Coupe or VRH, can't tell.

sale 7:

https://backpack.tf/profiles/76561198206831569#!/compare/1588550400/1588636800

https://backpack.tf/profiles/76561198013423899#!/compare/1588377600/1588550400

Bulky

sale 8:

https://backpack.tf/profiles/76561198013423899#!/compare/1588636800/1588723200

https://backpack.tf/profiles/76561198305494036#!/compare/1588550400/1588636800

QS

sale 9:

https://backpack.tf/profiles/76561198993873071#!/compare/1588723200/1588809600

https://backpack.tf/profiles/76561198821070973#!/compare/1582156800/1588809600

Can trace a key

sale 10:

https://backpack.tf/profiles/76561198333360232#!/compare/1584662400/1584748800

https://backpack.tf/profiles/76561198365375459#!/compare/1584576000/1584662400

Sold for Planets Ketche

Ketche Mini:

https://backpack.tf/suggestion/5ebae8cfb4f7c124d573dda0

Suggestion for 9 keys

sale 11:

https://backpack.tf/profiles/76561198365375459#!/compare/1584662400/1584748800

https://backpack.tf/profiles/76561198838788284#!/compare/1584662400/1584748800

Bulk

sale 12:

https://marketplace.tf/items/tf2/30836;5;u33

$7.2 / $1.70 = 4.24 keys <--- https://backpack.tf/item/5783729830

Total sales @:

4, 8, 9 keys

buyers up to ~6 keys,

taking 8 -9 keys