Pretty old price, hat is retired now. Just sold this for 21 keys pure after about 8 days on outpost. Actually had another guy also wanting to pay 21 keys but needed a week to buy them, and I sold it before he could get them.

http://www.tf2outpost.com/trade/11709796 is my trade

http://www.tf2outpost.com/trade/11484698 is another trade where he got offered 20 keys yesterday.

http://www.tf2outpost.com/trade/11881734 is another trade that's only been up a day and has an offer of 19 keys already.