I have actually sold some at 11.33, was out of stock for a while but restocked yesterday, have not sold any since though.

Not like it matters with the unsolds below my price, just putting that out there ¯\_(ツ)_/¯

10 ref seems to be a good low end of a range, yet I think 11 ref might still be suitable as the high end of the range since most of your valid unsolds at 11 ref are young trades.

Solds:

http://www.tf2outpost.com/trade/25858750 - 10 ref (Quicksold)

http://www.tf2outpost.com/trade/25744838 - 10 ref (Has gone through multiple users since the trade had been open: possible quicksell)

Sellers:

http://www.tf2outpost.com/trade/25847361 - 10 ref (Still young)

http://www.tf2outpost.com/trade/25825078 - 10 ref (4 days old, selling multiple)

http://www.tf2outpost.com/trade/25851558 - 10 ref (Unbumped)

http://www.tf2outpost.com/trade/25850941 - 10 ref (Quicksold without a bump)

http://www.tf2outpost.com/trade/25812797 - 10 ref

http://www.tf2outpost.com/trade/25797320 - 10 ref

http://www.tf2outpost.com/trade/25853402 - 10 ref (Young)

http://www.tf2outpost.com/trade/25826608 - 10 ref

http://www.tf2outpost.com/trade/25827174 - 10 ref (Unbumped)

http://www.tf2outpost.com/trade/25747752 - 10 ref (Very poorly bumped)

http://www.tf2outpost.com/trade/25783992 - 10 ref

http://www.tf2outpost.com/trade/25860310 - 10 ref (Young)

Unsolds:

http://www.tf2outpost.com/trade/25848204 - 10.33

http://www.tf2outpost.com/trade/25863321 - x2 10.33 ref

http://www.tf2outpost.com/trade/25798469 - 10.33 ref

http://www.tf2outpost.com/trade/25781390 - 11 ref (Sold)

http://www.tf2outpost.com/trade/25731864 - 11 ref

http://www.tf2outpost.com/trade/25783686 - 11 ref (Poorly bumped)

http://www.tf2outpost.com/trade/25841344 - 11 ref (Unbumped trade)

http://www.tf2outpost.com/trade/25857118 - 11 ref (Young)

http://www.tf2outpost.com/trade/25862454 - 11 ref (Young)

http://www.tf2outpost.com/trade/25858800 - 11 ref (Young)

http://www.tf2outpost.com/trade/25795312 - 11.33 ref (Selling multiple, Hex apparently said he sold some)

http://www.tf2outpost.com/trade/25848692 - 13 ref