This needs a drop.

Classified ads at time of posting:

http://backpack.tf/classifieds?item=Dark%20Age%20Defender&quality=11&tradable=1&craftable=1&page=1

2*16 refined (1 has Kills)

1*17 refined

1*17.77 refined

6*18 refined (1 has Voices From Below)

Unsolds at 18 refined:

http://www.tf2outpost.com/trade/26380050 (Young)

http://www.tf2outpost.com/trade/26375176 (Young)

http://www.tf2outpost.com/trade/26340454 (~3 days old)

http://www.tf2outpost.com/trade/26183906 (~3 weeks)

http://www.tf2outpost.com/trade/26359811 (~1 day, young)

http://www.tf2outpost.com/trade/26255072 (~2 weeks, poorly bumped)

http://www.tf2outpost.com/trade/26308475 (~1 week, poorly bumped)

Unsold at 17.66 refined:

http://www.tf2outpost.com/trade/26373602 (Young)

Sellers at 17 refined:

http://www.tf2outpost.com/trade/26320729 (Has Voices From Below, ~6 days old)

http://www.tf2outpost.com/trade/26367028 (~1 day old)

http://www.tf2outpost.com/trade/26372939 (Young)

http://www.tf2outpost.com/trade/26350239 (Has 4, ~2 days old)

Seller at 16 refined:

http://www.tf2outpost.com/trade/26377436 (Has Kills, young)

Seller at 15 refined:

http://www.tf2outpost.com/trade/26362338 (Has Kills, ~1 day old, never bumped)

This is all I could find on Outpost that are valid at the time of posting this suggestion.