Re-suggesting, using sales from the last suggestion onwards.

Sale 1:

Sold for 12 keys

Seller: https://backpack.tf/profiles/76561198002757046#!/compare/1537401600/1537488000

Buyer: https://backpack.tf/profiles/76561198140010255#!/compare/1537488000/1537574400

https://backpack.tf/item/6277115412

Seller’s compare shows 19 keys, but only the first 12 were involved.

X = 12

Sale 2:

Sold for $18.50

https://marketplace.tf/items/1106;5;u3001

http://manic.tf/keyprice/?at=2018-09-08 - $18.5 / $1.88 = 9.84 keys

Can’t find the item’s history.

X = 10

Sale 3:

Sold for 9 keys

Seller: https://backpack.tf/profiles/76561198079583278#!/compare/1535068800/1535328000

Buyer: https://backpack.tf/profiles/76561198311498888#!/compare/1535241600/1535328000

https://backpack.tf/item/6884358068

X = 9

Sale 4:

Sold for 9 keys + some ref

Seller: https://backpack.tf/profiles/76561198161475081#!/compare/1537660800/1537833600

Buyer: https://backpack.tf/profiles/76561198335791307#!/compare/1537747200/1537833600

https://backpack.tf/item/3843354259

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

X = 9

Other Sales:

https://backpack.tf/item/6277115412 (#1 & #2)

https://backpack.tf/item/4162882584 (#3)

https://backpack.tf/item/3843354259 (#4)

https://backpack.tf/item/3533193064 (#5)

#1

Bulk for Scorching Pullover

https://backpack.tf/profiles/76561198140010255#!/compare/1537488000/1537574400

https://backpack.tf/profiles/76561198129690707#!/compare/1537228800/1537488000

#2

Untraceable

https://backpack.tf/profiles/76561198005767069#!/compare/1536451200/1537660800

https://backpack.tf/profiles/76561198002757046#!/compare/1537401600/1537488000

#3

Bulk for SBTWC Chullo

https://backpack.tf/profiles/76561198147318341#!/compare/1536192000/1536364800

https://backpack.tf/profiles/76561198232041512#!/compare/1536192000/1536278400

#4

Sold for 7 keys? (buyer’s end)

https://backpack.tf/profiles/76561198170135162#!/compare/1536883200/1537056000

https://backpack.tf/profiles/76561198161475081#!/compare/1536883200/1536969600

some ref may have matched, I didn’t check, as it was gonna be too low anyways.

#5

Bulk or something

https://backpack.tf/profiles/76561197982879578#!/compare/1535846400/1536019200

https://backpack.tf/profiles/76561198043903498#!/compare/1535932800/1536019200

Sales at:

9 (2x)

10

12

Excluded 9 last time as there was only 1 sale at 9. Now there are 2, so I’ll keep it.

Going with 9-12.