Using last month.

Sale 1:

Sold with Cyclone Jumping Jack for pure

https://i.imgur.com/io08iCO.png - B/O of ~5.55

Seller: https://backpack.tf/profiles/76561198048851745#!/compare/1525824000/1525910400

Buyer: https://backpack.tf/profiles/76561198048851745#!/compare/1525824000/1525910400

It looks as if the buyer bought several taunts from the seller for full pure. Should be fine to use this sale here, as it’s no different from selling the two items for full price in two separate trades.

X = 5.5

Sale 2:

Sold for Orbiting Planets Pugilist Protector

https://i.imgur.com/io08iCO.png - B/O of ~5.55

Seller: https://backpack.tf/profiles/76561198048851745#!/compare/1525910400/1525996800

Buyer: https://backpack.tf/profiles/76561198335450100#!/compare/1525996800/1526083200

Easily caps.

X = 5.5 (Capped by B/O)

Sellers:

6 keys:

https://i.imgur.com/GVeqK2Y.png

https://backpack.tf/item/6460258745

Sales at:

5.5 (2x)

Going with 5.5 flat.