Classifieds at the time of posting this suggestion.

x1 for sale at 10 Refined - http://i.imgur.com/DUAKzax.png

x3 for sale at 10.66 Refined - http://i.imgur.com/yl2AVPy.png - The one listed by Shkeeperr seems to have been sold.

x1 for sale at 10.77 Refined - http://i.imgur.com/FMb0IFx.png

x1 for sale at 10.88 Refined - http://i.imgur.com/C5e2f6s.png - Seems to have been sold.

x4 for sale at 11 Refined - http://i.imgur.com/MZWzj1k.png

x1 for sale at 11.33 Refined - http://i.imgur.com/T1ZnB3y.png

x1 for sale at 11.44 Refined - http://i.imgur.com/KHNI122.png

Buyers suggest 10.22 and less is the quickbuying price - http://i.imgur.com/4DYhn3D.png

Sellers below 11.66 Refined

http://www.tf2outpost.com/trade/28346620 - 11 Refined.

http://www.tf2outpost.com/trade/28333886 - 11 Refined.

-

http://www.tf2outpost.com/trade/28347262 - 11.33 Refined.

http://www.tf2outpost.com/trade/28344028 - 11.33 Refined.

http://www.tf2outpost.com/trade/28347471 - 11.33 Refined.

http://www.tf2outpost.com/trade/28322654 - 11.33 Refined.

http://www.tf2outpost.com/trade/28329600 - 11.33 Refined.

http://www.tf2outpost.com/trade/28336590 - 11.33 Refined.

Unsolds at 11.66 Refined.

http://www.tf2outpost.com/trade/28292068 - 11.66 Refined - 3 weeks unsold.

Many unsolds ranging from 10.66 to 11.44 Refined. Item is clearly over-priced and 10.66 seems like a good price point, and judging by the buyers any lower would be pricing it at a quickselling price.