This is my first suggestion, if I have any mistake or something wrong with this suggestion pls tell me and help me to improve it :D

UNSOLD:

http://www.tf2outpost.com/trade/12833843 - 2.33 ref

http://www.tf2outpost.com/trade/12839179 - 2.33 ref

http://www.tf2outpost.com/trade/12831745 - 2.33 ref - lvl 42

http://www.tf2outpost.com/trade/12833639 - 2.66 ref

http://www.tf2outpost.com/trade/12835600 - 3 ref

http://www.tf2outpost.com/trade/12834154 - 3 ref

http://www.tf2outpost.com/trade/12826992 - 3 ref

http://www.tf2outpost.com/trade/12786202 - 3 ref

http://www.tf2outpost.com/trade/12840587 - 3.33 ref

http://www.tf2outpost.com/trade/12830705 - 3.33 ref

http://www.tf2outpost.com/trade/12840596 - 3.33 ref

http://www.tf2outpost.com/trade/12840181 - 3.33 ref

http://www.tf2outpost.com/trade/12840794 - 3.66 ref

http://www.tf2outpost.com/trade/12740229 - 4 ref

http://www.tf2outpost.com/trade/12829465 - 4 ref

http://www.tf2outpost.com/trade/12842377 - 4 ref

http://www.tf2outpost.com/trade/12842174 - 4 ref

http://www.tf2outpost.com/trade/12841482 - 4 ref

http://www.tf2outpost.com/trade/12834283 - 4 ref

BUYERS:

http://www.tf2outpost.com/trade/12825387 - 2.33 ref - got an add.

SUCCESSFUL BUYERS:

http://www.tf2outpost.com/trade/12714443 - 1.33 ref

http://www.tf2outpost.com/trade/12794216 - 2 ref

http://www.tf2outpost.com/trade/12780641 - 2 ref

http://www.tf2outpost.com/trade/12821515 - 2 ref

http://www.tf2outpost.com/trade/12822322 - 3 ref

http://www.tf2outpost.com/trade/12818180 - 3 ref

http://www.tf2outpost.com/trade/12809232 - 3 ref

SUCCESSFUL SELLERS:

http://www.tf2outpost.com/trade/12832626 - 1.33 ref

http://www.tf2outpost.com/trade/12811841 - 2 ref

http://www.tf2outpost.com/trade/12827116 - 2.33 ref

http://www.tf2outpost.com/trade/12787008 - 2.66 ref

http://www.tf2outpost.com/trade/12790252 - 3.33 ref

Backpack.tf Classfields:

http://img703.imageshack.us/img703/5180/4af7.png

http://img571.imageshack.us/img571/8057/057o.png

I hope this is enough proof for you.

Thanks.