Sale 1:

Bot.tf sale at 5 keys + 24 ref

https://i.imgur.com/Olo7X8h.png

Couldn’t find item’s history

There was also a quickbuy at 4 keys + 10 ref (~4.5 keys), but I’ll exclude that as it doesn’t appear to be too common.

X = 6

Sale 2:

Sold for 5 keys (ID’s match)

Seller: https://backpack.tf/profiles/76561198442764620#!/compare/1520553600/1520640000

Buyer: https://backpack.tf/profiles/76561198347361747#!/compare/1520467200/1520640000

X = 5

Sale 3:

Sold for 4 keys

Seller: https://backpack.tf/profiles/76561198154727799#!/compare/1520208000/1520553600

Buyer: https://backpack.tf/profiles/76561198018296992#!/compare/1520208000/1520553600

X = 4

Sale 4:

Being verified by a Steam™ Database Item Verifier bot

Seller: https://backpack.tf/profiles/76561198432210794#!/compare/1523836800/1523923200

Buyer: https://backpack.tf/profiles/76561198813245655#!/compare/1523145600/1523923200

X = 0

Sale 5:

Sold with 3 keys for Logo Brain Warming Wear

Seller: https://backpack.tf/profiles/76561198123224716#!/compare/1518825600/1518912000

Buyer: https://backpack.tf/profiles/76561198310873714#!/compare/1518825600/1518912000

Looks like a bit of an outlier without a B/O cap, excluding.

Sale 6:

Bulk for Steaming Modest Metal Pile of Scrap

Seller: https://backpack.tf/profiles/76561198255449573#!/compare/1521158400/1521244800

Buyer: https://backpack.tf/profiles/76561198053717045#!/compare/1521158400/1521244800

Sellers:

~5.74 keys:

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

https://backpack.tf/item/2756200877

https://i.imgur.com/7zPKQNv.png

https://backpack.tf/item/2693389696

6 keys:

https://i.imgur.com/ADJQ0gk.png

https://backpack.tf/item/2868018010

Sales at:

0

4

5

6

0 is an outlier, excluding 0.

Quickbuyers at 4+ keys:

https://i.imgur.com/Ic7DuwX.png

Excluding 4.

Going with 5-6.