Less than one page on outpost. Most of them are owned by famous strange part businessmen/women / highballers.

Sold/Offers/Adds for 2-2.22

http://www.tf2outpost.com/trade/10919517 buying trade for 2 ref

http://www.tf2outpost.com/trade/11869251 buying trade for 2 ref [closed]

http://www.tf2outpost.com/trade/12014113 sold some 2 ref?

http://www.tf2outpost.com/trade/12208809 two offers of 2.22

Sold/Offers/Adds for 2.33

http://www.tf2outpost.com/trade/12152379 offer of 2.33

http://www.tf2outpost.com/trade/12246107 offer of ref + decal

http://www.tf2outpost.com/trade/11838803 offer of 2,33 // f. frontier + name tag + dirty hot rod (1 + 2 + 1 = ~4)

http://www.tf2outpost.com/trade/11938040 has an add for 2.33

Sold/Offers/Adds for 2.66 / Higher

http://www.tf2outpost.com/trade/10623069 had at least 1 add for 1 key, claims to have sold 3

http://www.tf2outpost.com/trade/11865817 got an offer of maul + craft hat + .11-.22 (~1.66 + 1.33 + .11 = 3~ ref)

http://i.imgur.com/Ksc7H8p.png 2.66

http://i.imgur.com/UgXWNqB.png 2.66

Hard to find proof on this item :/