Outdated price, very common effect and low tier hat. I know Buyouts don't count as proof of evidence to set/raise an unusual price, but all of Outpost B/O are under the actual price, which means this price is outdated. Moreover, Tsarboosh is an unwanted hat, like many heavy's hats, and KaW is a really common effect. 7 only exists ( http://backpack.tf/stats/Unusual/Tsarboosh/Tradable/Craftable/56 ); 7 of 7 on Outpost.

prooves (the 6 first links are not quicksells)

- B/O arround 1.5 buds :

B/O : 1 bud + 15 keys : http://www.tf2outpost.com/trade/19603223 (lower than actual 2.4 buds value)

B/O : 33 keys (1 bud + 14 keys) : http://www.tf2outpost.com/trade/19083546

B/O : 30 keys (1 bud + 11 keys) : http://www.tf2outpost.com/trade/18854750

- B/O between 2.2 and 2.5 buds :

B/O : 2.2 buds (45 keys) : http://www.tf2outpost.com/trade/19280983

B/O : 2.2 buds : http://www.tf2outpost.com/trade/18918045

B/O : 2.5 buds : http://www.tf2outpost.com/trade/19580649

- Quickselling for 2 buds, and no offer for 3 days : http://www.tf2outpost.com/trade/19536741