Sale 1:

Sold with 3 keys for Anti-Freeze Frenchman’s Beret (Suggestion at 56)

Seller: https://backpack.tf/profiles/76561198134407457#!/compare/1528416000/1528502400

Buyer: https://backpack.tf/profiles/76561197964171516#!/compare/1528416000/1528502400

https://backpack.tf/item/6857957341

X = 53

Sale 2:

Sold with ~2 keys in metal for Isotope Blitzkrieg Field-Tested Medi-Gun (44)

Seller: https://backpack.tf/profiles/76561198081351988#!/compare/1528329600/1528416000

Buyer: https://backpack.tf/profiles/76561198134407457#!/compare/1528329600/1528416000

https://backpack.tf/item/6857957341

X = 42

Sale 3:

Sold for Vivid Plasma B’aaaargrgngnr n’ Bicorne (29)

Seller: https://backpack.tf/profiles/76561198107192699#!/compare/1528156800/1528243200

Buyer: https://backpack.tf/profiles/76561198081351988#!/compare/1528156800/1528243200

https://backpack.tf/item/6857957341

X = 29

Sale 4:

Bulk

Seller: https://backpack.tf/profiles/76561198080803234#!/compare/1527811200/1527897600

Buyer: https://backpack.tf/profiles/76561198264117106#!/compare/1527811200/1527897600

Sellers:

https://i.imgur.com/f2HdGwz.png

https://i.imgur.com/1NtJhZp.png

https://backpack.tf/item/6517667641 - ~38.8 keys (Scrap.tf)

https://backpack.tf/item/6857957341 - 55 keys

https://backpack.tf/item/6479872303 - 67 keys

Sales at:

29

42

53

53 is gonna be too high, excluding 53.

29 is too low. Scrap.tf would’ve paid significantly higher than this, and looks like an outlier. Excluding 29.

https://backpack.tf/profiles/76561198135388328#!/compare/1529020800/1529107200 - scrap.tf obtained the rifleman at ~16th June.

https://backpack.tf/profiles/76561198135388328#!/compare/1530748800/1530835200 - the rifleman left the bot on the 6th of July, and ended up in an unscanned backpack

https://backpack.tf/profiles/76561198135388328#!/compare/1533168000/1533254400 - the rifleman ended up back in the bot 3rd August.

Using the scrap.tf unsold as the low-end here.

Going with 39-42.

Untraceable, bought from scrap.tf

https://backpack.tf/profiles/76561198135388328#!/compare/1535241600/1535328000

https://backpack.tf/profiles/76561198099136395#!/compare/1535241600/1535328000

Untraceable, re-sold to scrap.tf

https://backpack.tf/profiles/76561198099136395#!/compare/1535328000/1535414400

https://backpack.tf/profiles/76561198135388328#!/compare/1535328000/1535414400