Sale 1:

Sold to a quickbuyer for 16 keys

Seller: https://backpack.tf/profiles/76561198016339526#!/compare/1546732800/1546819200

Buyer: https://backpack.tf/profiles/76561198337734785#!/compare/1546732800/1546819200

https://backpack.tf/item/935971806

X = 16

Sale 2:

Sold to a quickbuyer for 16 keys + at least 3 ref

Seller: https://backpack.tf/profiles/76561198337734785#!/compare/1546819200/1546905600

Buyer: https://backpack.tf/profiles/76561198024867201#!/compare/1546819200/1546905600

https://backpack.tf/item/935971806

X = 16

Sale 3:

Sold for 14 keys + some metal

Seller: https://backpack.tf/profiles/76561198002757046#!/compare/1551916800/1552003200

Buyer: https://backpack.tf/profiles/76561198169273396#!/compare/1551916800/1552003200

https://backpack.tf/item/4953978850

X = 14

Marketplace Sales:

https://marketplace.tf/items/600;5;u7

https://manic.tf/keyprice/?at=2019-03-16 - $47 / $1.79 = 26.26 keys

Other Sales:

https://backpack.tf/item/4953978850 (#1)

https://backpack.tf/item/925736807 - marketplace

#1

Untraceable

https://backpack.tf/profiles/76561198030589062#!/compare/1546905600/1548201600

https://backpack.tf/profiles/76561198002757046#!/compare/1546819200/1546905600

Sellers:

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

https://backpack.tf/item/935971806 - 17 keys

https://backpack.tf/item/925736807 - 18 keys

Sales at:

14

16 (2x)

26

26 is a large outlier, excluding 26.

The quickbuys at 16 are likely high because sellers probably didn’t update their prices after this item last got updated. Shouldn’t exclude them or anything lower due to that, especially given how long it took to sell for 14.

Going with 14-16.