Sale 1:

Sold for 43 keys

Seller: https://backpack.tf/profiles/76561198232041512#!/compare/1535414400/1535500800

Buyer: https://backpack.tf/profiles/76561198101657879#!/compare/1535414400/1535500800

https://backpack.tf/item/4735249716

X = 43

Sale 2:

Sold for 29 keys + Cool Field-Tested Woodsy Widowmaker SMG (12)

Seller: https://backpack.tf/profiles/76561198232041512#!/compare/1532995200/1533081600

Buyer: https://backpack.tf/profiles/76561198124481747#!/compare/1532908800/1533081600

https://backpack.tf/item/3690465166

X = 41

Sale 3:

Sold for 40 keys

Seller: https://backpack.tf/profiles/76561198101657879#!/compare/1535846400/1536019200

Buyer: https://backpack.tf/profiles/76561198054198170#!/compare/1535846400/1535932800

https://backpack.tf/item/4735249716

X = 40

Sale 4:

Sold for $70 on marketplace.tf

https://marketplace.tf/items/417;5;u90

http://manic.tf/keyprice/?at=2018-09-10 - $70 / $1.87 = 37.43 keys

Can’t find item history

X = 37

Other Sales:

https://backpack.tf/item/4735249716 (#1-3)

https://backpack.tf/item/3690465166 (#4-7)

#1

Bulk for Purple Confetti Co-Pilot

https://backpack.tf/profiles/76561198040186479#!/compare/1532563200/1532649600

https://backpack.tf/profiles/76561198232041512#!/compare/1532563200/1532649600

#2

Bulk for Demonflame Vive La France

https://backpack.tf/profiles/76561198054198170#!/compare/1535846400/1535932800

https://backpack.tf/profiles/76561198258264645#!/compare/1535846400/1535932800

#3

Bulk

https://backpack.tf/profiles/76561198258264645#!/compare/1536364800/1536451200

https://backpack.tf/profiles/76561198044010685#!/compare/1536364800/1536451200

#4

With a couple keys in items for Time Warp Tam O’ Shanter + Stormy DCO

https://backpack.tf/profiles/76561198018653729#!/compare/1531958400/1532044800

https://backpack.tf/profiles/76561198223981756#!/compare/1531958400/1532044800

#5

Sold for Stormy Horrific Headsplitter (35) + a bunch of haunted items

https://backpack.tf/profiles/76561198223981756#!/compare/1532131200/1532217600

https://backpack.tf/profiles/76561198316469164#!/compare/1532131200/1532217600

Some of these haunted items are massively outdated and would be off by miles. It may also end up being higher than the unsold at 45. Since we already have 2 pure sales, it should do any harm to exclude this one.

#6

Sold for Dead Presidents Patriot Peak + a couple keys in items

https://backpack.tf/profiles/76561198316469164#!/compare/1532131200/1532217600

https://backpack.tf/profiles/76561198040186479#!/compare/1532131200/1532217600

Was used on the Peak.

#7

Bulk for Purple Confetti Co-Pilot

https://backpack.tf/profiles/76561198040186479#!/compare/1532563200/1532649600

https://backpack.tf/profiles/76561198232041512#!/compare/1532563200/1532649600

2 D@D Jeepcaps were involved in this sale hence why it is included

Sellers:

45 keys:

https://i.imgur.com/4bkCCvF.png

https://backpack.tf/item/3377979695

Sales at:

37

40

41

43

Going with 37-43.