Sale 1:

Sold for $31 on marketplace.tf

https://marketplace.tf/items/30615;5;u3006

http://manic.tf/keyprice/?at=2018-10-11 - $31 / $1.78 = 17.42 keys

https://backpack.tf/item/5581739319

X = 17

Sale 2:

Sold for 11 keys + cheap stranges

Seller: https://backpack.tf/profiles/76561198268615482#!/compare/1536969600/1537401600

Buyer: https://backpack.tf/profiles/76561198148511293#!/compare/1537315200/1537401600

https://backpack.tf/item/5565705282

X = 11

Sale 3:

Sold for 10 keys

Seller: https://backpack.tf/profiles/76561198075581853#!/compare/1536969600/1537574400

Buyer: https://backpack.tf/profiles/76561198268615482#!/compare/1536883200/1536969600

https://backpack.tf/item/5565705282

X = 10

Sale 4:

Sold for 9 keys

Seller: https://backpack.tf/profiles/76561198075368942#!/compare/1537401600/1537488000

Buyer: https://backpack.tf/profiles/76561198148511293#!/compare/1537315200/1537401600

https://backpack.tf/item/3901392425

X = 9

Sale 5:

Quicksold for 7 keys + ~0.5 keys in metal

Seller: https://backpack.tf/profiles/76561198300011023#!/compare/1537315200/1537401600

Buyer: https://backpack.tf/profiles/76561198007077925#!/compare/1537401600/1537488000

https://backpack.tf/item/5565705282

X = 7.5

Sale 6:

Sold with ~0.5 keys in items for Terror-Watt Cadaver’s Cranium

Seller: https://backpack.tf/profiles/76561198302002958#!/compare/1539216000/1539302400

Buyer: https://backpack.tf/profiles/76561198286485732#!/compare/1539129600/1539302400

https://backpack.tf/item/5581739319

Other Sales:

https://backpack.tf/item/5565705282 (#1)

https://backpack.tf/item/4440143429 (#2-4)

https://backpack.tf/item/3901392425 (#5)

https://backpack.tf/item/4228879825 - scammers and stuff

https://backpack.tf/item/5365832294 - marketplace

https://backpack.tf/item/4782114632 - marketplace

https://backpack.tf/item/6720500876 - sold to scrap (not using scrap for taunts at the moment)

#1

Most likely sold to an unboxer for one of the 2 unpriced unusuals that appear here, possibly involving other items. Unboxer then appears to have sold to a quickbuyer or something

https://backpack.tf/profiles/76561198148511293#!/compare/1537315200/1537401600

https://backpack.tf/profiles/76561198300011023#!/compare/1537315200/1537401600

#2

Untraceable

https://backpack.tf/profiles/76561198058721013#!/compare/1537660800/1538179200

https://backpack.tf/profiles/76561198205939253#!/compare/1538006400/1538092800

#3

Untraceable

https://backpack.tf/profiles/76561198205939253#!/compare/1538006400/1538092800

https://backpack.tf/profiles/76561198101300189#!/compare/1538265600/1538352000

#4

Backpack purchase

https://backpack.tf/profiles/76561198101300189#!/compare/1538956800/1539216000

https://backpack.tf/profiles/76561198017901187#!/compare/1538870400/1539216000

#5

Sold for Orbiting Fire Tossle Cap

https://backpack.tf/profiles/76561198148511293#!/compare/1537574400/1537660800

https://backpack.tf/profiles/76561198000218746#!/compare/1537488000/1537747200

Waaaaay too high.

Sellers:

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

https://i.imgur.com/oADf22o.png

https://backpack.tf/item/5581739319 - 23 keys

https://backpack.tf/item/5565705282 - 23 keys

https://backpack.tf/item/5385664795 - 24 keys

https://backpack.tf/item/3905580143 - 24 keys

Sales at:

7.5

9

10

11

17

7.5 quicksold, excluding 7.5.

Would prefer to exclude sales 1 and 6, as the buyer of sale 1 sold for about half of what they paid for it. We also have some nice pure sales to worth with already. Excluding 17.

Going with 9-11.