Out of 3 pages and most of the pages it is being sold in a set or is uncraftable if found these links

Selling for 5 keys

http://www.tf2outpost.com/trade/9056997 - selling for 5 keys

http://www.tf2outpost.com/trade/8943435 - selling for 5 keys

http://www.tf2outpost.com/trade/8921224 - selling for 5 keys

Unsold at current range

http://www.tf2outpost.com/trade/9024233 - unsold at 5 keys 3 ref

http://www.tf2outpost.com/trade/9011766 - backpack.tf price

http://www.tf2outpost.com/trade/9009044 - 5 keys 2 ref

Most links that are willing to sell separately are selling for 7 keys so it was hard to find lots of proof, but if you wanted to get it for 5 keys its not that hard