The market for this item is a little strange and noone ever bumps their trades. :/ Over the past several days of lurking bookmarking trades of this beloved item I haven't found any 1 key sales, or any above 11 ref for that matter; time for a drop. 10-11 ref should be an optimal range here based on recent sales.

Sales:

http://www.tf2outpost.com/trade/24782571 10 ref (not in inventory)

http://www.tf2outpost.com/trade/24811323 10 ref

http://www.tf2outpost.com/trade/24805021 10 ref

http://www.tf2outpost.com/trade/24754870 10 ref

http://www.tf2outpost.com/trade/24755715 11 ref

http://www.tf2outpost.com/trade/24758646 11 ref

Sellers:

http://www.tf2outpost.com/trade/24829941 8.88 ref (young)

http://www.tf2outpost.com/trade/24832501 11 ref (young; my trade)

http://www.tf2outpost.com/trade/24671144 12 ref (1 week; restocker)

http://www.tf2outpost.com/trade/24790483 12.44 ref (2 days)

http://www.tf2outpost.com/trade/24823185 1 key (young)

http://www.tf2outpost.com/trade/24822983 1 key (young)

http://www.tf2outpost.com/trade/24816899 1 key (1 day)

http://www.tf2outpost.com/trade/24816443 1 key (1 day; never bumped)

http://www.tf2outpost.com/trade/24815473 1 key (1 day; never bumped)

http://www.tf2outpost.com/trade/24780255 1 key (3 days)

http://www.tf2outpost.com/trade/24763969 1 key (4 days; never bumped)

http://www.tf2outpost.com/trade/24822638 "backpack.tf price" (young)

http://www.tf2outpost.com/trade/24792506 "backpack.tf price" (2 days)

Classifieds:

http://i.imgur.com/CfM6aQx.png

1 x 8.88 ref

2 x 9 ref

1 x 9.77 ref

1 x 10 ref

6 x 11 ref

1 x 11.66 ref

4 x 12 ref

If you have any counter-proof, please do provide it. ^^