"Any hat can be priced based on a single sale if ALL these criteria are met:

- There are no other recent sales in the last 3 months

- The hat went to a collector or person who intends to keep the hat. A collector can be identified by looking at the person's trade history, item history of similar unusuals in the backpack OR if the owner has not resold the hat 1 month after the sale occurred.

- The hat is not a new hat / effect (i.e. new halloween effects during the halloween event). You must wait until after the event is over to price these based on a single sale."

Sale (month old)

http://backpack.tf/profiles/76561198070602136#!/compare/1477440000/1477612800

Sold for ML Conoisseur (outdated) + DP Brainiac -> 56 keys flat price

Mini on Conoisseur ~ 24 :

http://backpack.tf/profiles/76561198204761271#!/compare/1473724800/1473811200 Max were 23 at the time -> 24 keys

http://backpack.tf/profiles/76561198041750059#!/compare/1472428800/1472601600 24 pure

Any pertinent comments are welcome