Pretty hard to price these since their histories are unavailable and outpost doesn't recognize they exist but here goes...

Sold at 10 refined: http://postimg.org/image/pq7u1ymv5/

Sold at 8 refined: http://www.tf2outpost.com/trade/26897881

Classfields: http://postimg.org/image/7aw01mci9/ & http://postimg.org/image/4ai6kpgll/

In classfields there is a seller at 10 ref, along with a buyer, then there is a page of sellers at 14 ref.

EDIT: http://postimg.org/image/4vsba0aqb/ - new classfield seller at 12 refined

http://www.tf2outpost.com/trade/26903899 - seller at 12 refined

http://www.tf2outpost.com/trade/26901621 - seller at 12 refined

http://www.tf2outpost.com/trade/26903300 - seller at 11 refined

http://postimg.org/image/sl9ppphuv/ - would sell at 10-11 refined

Any additional proof/counter-proof is welcome.

Thanks for reading and have a nice day.