Hmm. Even two weeks ago these were having a hard time selling at 13 ref - http://www.tf2outpost.com/trade/27868684. Maybe worth keeping this up for a bit

Sellers below 1 key

http://www.tf2outpost.com/trade/27964062 - 13 ref, 1 week, "backpack.tf prices"

http://www.tf2outpost.com/trade/27968518 - 15 ref, 1 week

Classifieds at the time of posting:

http://backpack.tf/classifieds?item=Nostromo+Napalmer&quality=1&tradable=1&craftable=1&australium=-1 ->

Sell Orders:

x1 at 15.66 ref (young)

x3 at 16 ref (all three have been up for a week)

x1 at 1 key (unsold for 6 months)

Unless you can get more sales at 1 key, it's pretty much an outlier. Neutral.