Only sale within 3 months. Has not been sold since the sale about 1 month+ ago. #Challengeoftheweek. http://forums.backpack.tf/index.php?/topic/18297-challenges-of-the-week/

Sale #1

http://www.tf2outpost.com/trade/21759611

Sold for 2 buds + Vivid Plasma Big Country (2 buds * 0.9 = 1.8 buds)

Backpack of seller

http://backpack.tf/profiles/76561198004619991?time=1407308400 Before

http://backpack.tf/profiles/76561198004619991?time=1407567600 After

Backpack of buyer

http://backpack.tf/profiles/76561197967794797?time=1407394800 Before

http://backpack.tf/profiles/76561197967794797?time=1407481200 After

Total: ~3.8 buds

http://forums.backpack.tf/index.php?/topic/6033-new-unusual-price-suggestion-guide-the-cheat-sheet/

Exception 2: Rare Hats

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 effect is not a summer 2013 effect. (robo, 2013 halloween effects can be used as they are often rarely traded and rarely unboxed)

- 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.