Classifieds: http://backpack.tf/classifieds?item=Co-Pilot&quality=6&tradable=1&craftable=1&australium=-1

Screenshots of Classifieds: http://imgur.com/a/Ko6V3

<Sellers>

[17.00] http://backpack.tf/item/3394461237 - http://backpack.tf/u/76561198063453794 - Listed 3 days ago, hasn't been bumped since

[17.11] http://backpack.tf/item/3495350956 - http://backpack.tf/u/76561198052373313 - Listed about an hour ago, young.

[17.22] http://backpack.tf/item/3341751353 - http://backpack.tf/u/76561198311820950 - Listed about 2 hours ago, young, BOT

[17.22] http://backpack.tf/item/3432831877 - http://backpack.tf/u/76561198223840892 - Listed 2 days ago, BOT

[17.22] http://backpack.tf/item/3448344055 - http://backpack.tf/u/76561198223840892 - Listed 5 hours ago, BOT

[17.33] http://backpack.tf/item/3365444504 - http://backpack.tf/u/76561198311725787 - Listed 8 days ago, BOT

[17.33] http://backpack.tf/item/3320017008 - http://backpack.tf/u/76561198295486957 - Listed a day ago, BOT

[20.00] http://backpack.tf/item/3337021734 - http://backpack.tf/u/76561198075435735 - Listed 4 days ago, regularly bumped

[1 key] http://backpack.tf/item/3389374270 - http://backpack.tf/u/76561198066177396 - Listed 28 days ago, BOT

17.22 refined seems to be the way to go. Buyers start at 17 refined.