nice proof, very nice. and good suggestion too.

Dat proof. Upvote. :)

Counterproof:

http://backpack.tf/classifieds/search/strange%20huntsman no one selling at 7 keys

http://www.tf2outpost.com/trade/10015083 selling Huntsman for #50 crate and have an add(2 days old)

http://www.tf2outpost.com/trade/10059194 offer on huntsman of 7 keys pure(2 days ago) and 5 pure + TS villains veil, that ~7 keys w/ overpay(1 hour ago)

http://www.tf2outpost.com/trade/10019913 offer of 7 pure(3 days ago) and 6 pure + 2 keys in items(2 days ago)

http://www.tf2outpost.com/trade/9368680 S.F. Mackerel + 1 key(2 days ago)

http://www.tf2outpost.com/trade/10046655 have 3 offers of 7 or more keys in past 2 days.

http://www.tf2outpost.com/trade/9472823 s.f. frontier + 3 keys offer(2 days ago)

http://www.tf2outpost.com/trade/9736714 selling for 8 and one is being sold

Concluding. Yes, there possible (but hard) to find huntsman for 6 keys. It's because some people started to panic or quickselling. 60% of people want 7 keys for huntsman, 30% are highballers and only 10%are in panic and trying to sell it for cheap. Btw, half of your Unsold links are no more valid. That means that there are high demand on it. One of your links included joke, where person was selling max for 20 keys. Other 3 unsold links are already closed.