9 months old price.

http://backpack.tf/classifieds/search/backbiter not many,few painted ones for 1 key

UNSOLDS (1 KEY):

http://www.tf2outpost.com/trade/11402008 4 days

http://www.tf2outpost.com/trade/11480114 1 day

http://www.tf2outpost.com/trade/11397795 4 days, purple painted

http://www.tf2outpost.com/trade/11387161 4 days

http://www.tf2outpost.com/trade/11507892 12 hours

http://www.tf2outpost.com/trade/11389773 4 days

http://www.tf2outpost.com/trade/11061641 had add, still unsold (2 weeks)

http://www.tf2outpost.com/trade/11493322 1 day

http://www.tf2outpost.com/trade/11429992 3 days

http://www.tf2outpost.com/trade/11506727 13 hours

http://www.tf2outpost.com/trade/11413158 4 days

http://www.tf2outpost.com/trade/11500949 17 hours

http://www.tf2outpost.com/trade/11501488 17 hours

http://www.tf2outpost.com/trade/11520258 2 hours

http://www.tf2outpost.com/trade/11499466 19 hours

http://www.tf2outpost.com/trade/11458967 2 days

http://www.tf2outpost.com/trade/11453783 2 days

http://www.tf2outpost.com/trade/11459964 painted pink!, 2 days

http://www.tf2outpost.com/trade/10842146 3 weeks

http://www.tf2outpost.com/trade/11336951 painted ye old rustic colour,6 days(not bumped)

http://www.tf2outpost.com/trade/11139446 Painted, 1 week

http://www.tf2outpost.com/trade/11416616 3 days

SOLD FOR ONE KEY:

http://www.tf2outpost.com/trade/11339190 Have many of them, sold one for one key, 6 days old, one bookmark

(I don't know how to find more sold proof, so I failed at this one)

most of BUYERS are quickbuyers

THIS NEXT SECTION WORK AS SELLER PROOF

(LE COLLECTORS ARE THE BUYERS)

http://www.tf2outpost.com/trade/10233919 collecting, willing to pay one key each,

has bought many

Note: *All prices change when the price of Billycocks change in this trade

http://www.tf2outpost.com/trade/9555413 willing to pay 1 key each

As you can see, this guy has bought many too

NOTE: I didn't include special leves.

And, by the way, first suggestion.