5 ref sales are happening too infrequently to be left in the range, and many sellers are willing to go lower while this item still holds on to some value. Outpost is flooded with them, and on the 20th page are trades that are just 50 minutes old. Finding old proof is a bit tough, but I think with many available for lower then 5 ref and their inability to move at that price it should be removed from the range.

Classifieds:

http://backpack.tf/classifieds/search/722/6/0 (http://imgur.com/CbWHUGm)

-1 at 4.00 ref

-1 at 4.33 ref

-1 at 4.44 ref

-1 at 4.55 ref

-4 at 4.66 ref

-Many at 5.00ref+

Unsolds at 5 ref:

http://www.tf2outpost.com/trade/11875756 - 3 days

http://www.tf2outpost.com/trade/11901852 - 2 days

http://www.tf2outpost.com/trade/11948419 - 1 day

http://www.tf2outpost.com/trade/11927169 - 1 day

http://www.tf2outpost.com/trade/11949538 - 1 day

http://www.tf2outpost.com/trade/11949664 - 1 day

http://www.tf2outpost.com/trade/11958093 - 21 hours

http://www.tf2outpost.com/trade/11961741 - 18 hours

http://www.tf2outpost.com/trade/11964616 - 15 hours

http://www.tf2outpost.com/trade/11967615 - 13 hours

http://www.tf2outpost.com/trade/11981426 - 5 hours

http://www.tf2outpost.com/trade/11980909 - 5 hours

http://www.tf2outpost.com/trade/11984614 - 2 hours

http://www.tf2outpost.com/trade/11986583 - 1 hour

http://www.tf2outpost.com/trade/11986331 - 1 hour

Unsolds in Current Range (4.66-5.00 ref):

http://www.tf2outpost.com/trade/11977867 - 4.88

http://www.tf2outpost.com/trade/11979615 - 4.88

http://www.tf2outpost.com/trade/11973915 - ~4.77-4.88

Selling/Sold at Proposed High End (4.66 ref):

http://www.tf2outpost.com/trade/11981066

http://www.tf2outpost.com/trade/11936378

http://www.tf2outpost.com/trade/11988248

http://www.tf2outpost.com/trade/11972421

http://www.tf2outpost.com/trade/11919391

http://www.tf2outpost.com/trade/11987808

http://www.tf2outpost.com/trade/11984596

http://www.tf2outpost.com/trade/11987219

http://www.tf2outpost.com/trade/11939450

Selling/Sold at Proposed Low End (4.33 ref):

http://www.tf2outpost.com/trade/11965987

http://www.tf2outpost.com/trade/11953616

http://www.tf2outpost.com/trade/11960507

http://www.tf2outpost.com/trade/11987559

http://www.tf2outpost.com/trade/11938323

http://www.tf2outpost.com/trade/11935296

Note: Sales do happen at 4 ref, and even lower as well. I chose not to include these in my proof because they are gone very quickly and should be considered quicksells.