I have never done an unusual suggestion in my life, so please tell me if I did something wrong.

Sale:

Sold for 11 keys pure: http://www.tf2outpost.com/trade/27697315

Sellers:

http://www.tf2outpost.com/trade/27689963 B/O 14 keys, unsold for 2 weeks with a bump

http://www.tf2outpost.com/trade/27596378 B/O 15 keys, unsold for a month with a bump

Could not find anything else on either Classifieds or OP. The only other one I could trace was this one on SCM being sold for ~40USD. (http://prntscr.com/9utqh0)