Wrong range, then wrong currency, sorry for all that mess. 9 months price needs an update, I suppose.

5 exist, 3 sellers @ OP:

http://www.tf2outpost.com/trade/19067271 - 15 keys, lowered from 18 (you can see his 18 key offer at classifieds), 2 days

http://www.tf2outpost.com/trade/19046454 - 18 keys, 3 days

http://www.tf2outpost.com/trade/18963908 - 18 keys, 6 days (lowered to 17 @ classifieds)

Solds:

http://www.tf2outpost.com/trade/18782421 - 18 keys,sold to Georgoo, who sells @ 18 keys

http://www.tf2outpost.com/trade/19005388 - 19 keys, sold to Jizz syrup who sells it @ 15 keys

Thanks to Kodorin for help with that suggestion.