It is now possible to sell these for a wep each. Trades are still around for less, so leaving the low range as is.

http://www.tf2outpost.com/trade/14049556 - selling for a scrap each, has an add

http://www.tf2outpost.com/trade/13678704 - has sold some sets which include reds, at a weapon per crate

http://www.tf2outpost.com/trade/12532015 - sold many of all types of coolers at a weapon each

http://www.tf2outpost.com/trade/12621919 - has sold at least 1 red for a weapon

http://www.tf2outpost.com/trade/12532226 - appears to have sold a red or two for a scrap each

http://www.tf2outpost.com/trade/13000015 - out of stock on reds at a weapon each

http://www.tf2outpost.com/trade/13105674 - sold a red crate for a weapon

http://www.tf2outpost.com/trade/12925601 - sold out on reds at a weapon each

http://www.tf2outpost.com/trade/12622843 - sold some reds at a wep each