Eww… Uncraftables.

Sellers below 5 ref:

http://www.tf2outpost.com/trade/22675226 - 4.77 ref; 1 day

Sellers at 5 ref:

http://www.tf2outpost.com/trade/22682828 - 13 hours

http://www.tf2outpost.com/trade/22662266 - 1 day

http://www.tf2outpost.com/trade/22658546 - 2 days

http://www.tf2outpost.com/trade/22422689 - 2 weeks

http://www.tf2outpost.com/trade/22676047 - 5.16 ref; 1 day

(?)http://www.tf2outpost.com/trade/22580375 - 5.16 ref*; 5 days

*Appears to be selling at backpack.tf price

Sellers at 5.33 ref:

http://www.tf2outpost.com/trade/22671526 - 1 day

http://www.tf2outpost.com/trade/22651711 - 2 days

Solds:

http://www.tf2outpost.com/trade/22673615 - 4 ref; <1 day

http://www.tf2outpost.com/trade/22492210 - 4 ref; <1 week

http://www.tf2outpost.com/trade/22673668 - 4.33 ref; 1 day

http://www.tf2outpost.com/trade/22494673 - 4.33 ref; <1 week

http://www.tf2outpost.com/trade/22638913 - 5.33; 1 day

Trade to watch:

http://www.tf2outpost.com/trade/22630280 - 3 days

http://www.tf2outpost.com/trade/22588243 - 5 days

http://www.tf2outpost.com/trade/22586196 - 5 days

http://www.tf2outpost.com/trade/22400196 - 2 weeks

http://www.tf2outpost.com/trade/22011851 - 1 month

Classifieds:

http://backpack.tf/classifieds/?tradable=1&craftable=-1&item=Air%20Strike&quality=11

1x 4.33 ref

3x 5 ref

…

Reason for price range:

Current price range: 5- 5.33 ref

Suggested price range: 5 ref

The only trades that do sell are the odd one that sold above 5 ref and the several at 1 ref below the current price range which was always sold within a day. Thus solds are not reliable to base prices off. As you can see there are limited sellers at 5.33 ref with the majority at 5 ref. This is why 5.33 ref has been knocked off the range.