Using last month.

Sale 1:

Sold for Silver Cyclone Scotsman’s Stagger (Mini at 6 below) + Strange Pro. KS Vaccinator (~2)

https://i.imgur.com/FnD2Wzp.png - B/O of 8 on a different one, should be safe to assume the B/O is the same.

Seller: https://backpack.tf/profiles/76561198386348408#!/compare/1524960000/1525046400

Buyer: https://backpack.tf/profiles/76561198052999475#!/compare/1524960000/1525046400

X = 8

Sale 2:

Sold for 6 keys

Seller: https://backpack.tf/profiles/76561198121830870#!/compare/1523577600/1523664000

Buyer: https://backpack.tf/profiles/76561198093511899#!/compare/1521676800/1524182400

X = 6

Sale 3:

Sold for 6 keys + 4 ref

Seller: https://backpack.tf/profiles/76561198446905869#!/compare/1525132800/1525219200

Buyer: https://backpack.tf/profiles/76561198128173177#!/compare/1525132800/1525219200

X = 6

Sale 4:

Sold for Fountain of Delight Scotsman’s Stagger (20)

No outpost

Seller: https://backpack.tf/profiles/76561198061489334#!/compare/1523923200/1524009600

Buyer: https://backpack.tf/profiles/76561198119390285#!/compare/1523750400/1524009600

Not using this sale without a B/O.

Silver Cyclone Stagger Mini:

Sold for 6 keys

Seller: https://backpack.tf/profiles/76561198386348408#!/compare/1525046400/1525132800

Buyer: https://backpack.tf/profiles/76561198337378097#!/compare/1525046400/1525132800

X = 6

Sellers:

8 keys:

https://i.imgur.com/kgfjkti.png

https://backpack.tf/item/6521602635

19 keys:

https://i.imgur.com/cCmxgNz.png

https://backpack.tf/item/6405199483

https://backpack.tf/item/5371536812

Sales at:

6 (2x)

8

Going with 6-8.