http://www.tf2outpost.com/trade/9644413 some offers of 12,13, and even 14 keys

http://www.tf2outpost.com/trade/9018145 13 keys, even a 15 key offer ( a while ago)

http://www.tf2outpost.com/trade/9497989 a few 13/ 12 key offers

http://www.tf2outpost.com/trade/10342308 a 12 key offer

mother of all proof

http://www.tf2outpost.com/trade/9910508

http://www.tf2outpost.com/trade/9717664

both buy any unusual for 12 keys.

So any unusual is at least 12 keys.

please leave me any recomendations if you have any thank you :).

the last time i changed this i didnt know about the the guys buying any for 12 keys, it was my first change and a stupid one the price should be updated.