Sale 1:

Sold to a quickbuyer for 4 keys + ~0.5 keys in reclaimed/scrap metal (buyer’s end)

Seller: https://backpack.tf/profiles/76561198090750997#!/compare/1565136000/1565222400

Buyer: https://backpack.tf/profiles/76561198048851745#!/compare/1565136000/1565222400

https://backpack.tf/item/7341357659

X = 4.5

Sale 2:

Sold for 3 keys?

Seller: https://backpack.tf/profiles/76561198094028499#!/compare/1547424000/1565136000

Buyer: https://backpack.tf/profiles/76561198090750997#!/compare/1564531200/1565136000

https://backpack.tf/item/7341357659

X = 3

Other Sales:

https://backpack.tf/item/7157196199 (#1)

https://backpack.tf/item/6671389733 (#2)

https://backpack.tf/item/6633217178 (#3 & #4)

https://backpack.tf/item/6509414806 (#5)

https://backpack.tf/item/6481467711 - not unusual at the time

#1

Untraceable

https://backpack.tf/profiles/76561198167787044#!/compare/1563408000/1563494400

https://backpack.tf/profiles/76561198453530349#!/compare/1565049600/1565136000

#2

Untraceable

https://backpack.tf/profiles/76561198340634356#!/compare/1564185600/1564272000

https://backpack.tf/profiles/76561198068022595#!/compare/1564185600/1564358400

https://i.imgur.com/e2y5uA7.png - labelled as 5 keys

#3

Untraceable

https://backpack.tf/profiles/76561198040186479#!/compare/1563408000/1563494400

https://backpack.tf/profiles/76561198190395023#!/compare/1563321600/1563926400

#4

SCM

https://backpack.tf/profiles/76561198190395023#!/compare/1564012800/1564272000

https://backpack.tf/profiles/76561198101896581#!/compare/1563667200/1564617600

#5

Untraceable

https://backpack.tf/profiles/76561198171400503#!/compare/1564876800/1565827200

https://backpack.tf/profiles/76561198340634356#!/compare/1564790400/1564876800

https://i.imgur.com/e2y5uA7.png - labelled as a 4 key + 12 ref purchase

Sellers:

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

https://backpack.tf/item/7157196199 - ~4.2 keys

https://backpack.tf/item/7341357659 - ~4.5 keys

https://backpack.tf/item/7459942629 - ~5 keys

https://backpack.tf/item/7422114849 - 5 keys

https://backpack.tf/item/6651610159 - ~5.6 keys

Sales at:

3

4.5

Seller at ~4.24 keys, rounding to 4.

3 is way too low, excluding 3.

Basing my low-end off the untraceable bot.tf sale at ~4 keys, and the seller that’ll round to 4.

Going with 4-4.5