Poco a poco.

http://www.tf2outpost.com/trade/15774783 - 3.00, sold.

http://www.tf2outpost.com/trade/15790960 - 3.00, 5 days, poorly bumped.

http://www.tf2outpost.com/trade/15832727 - 3.33, 3 days

http://www.tf2outpost.com/trade/15160879 - 3.55, sold

http://www.tf2outpost.com/trade/15879280 - 3.66, 9 hours

http://www.tf2outpost.com/trade/15877417 - 3.66, 11 hours

http://www.tf2outpost.com/trade/15875988 - 3.66, 12 hours

http://www.tf2outpost.com/trade/15875585 - 3.66, 13 hours

http://www.tf2outpost.com/trade/15846451 - 3.66, 2 days

http://www.tf2outpost.com/trade/15828281 - 3.66, 3 days

http://www.tf2outpost.com/trade/15822105 - 3.66, 3 days

http://www.tf2outpost.com/trade/15831326 - 4.00, 3 days

http://www.tf2outpost.com/trade/15786962 - 4.00, 5 days

http://www.tf2outpost.com/trade/15794677 - 4.00, 5 days

http://www.tf2outpost.com/trade/15686168 - 4.00, 1 week

http://www.tf2outpost.com/trade/15637754 - 4.00, 1 week

http://www.tf2outpost.com/trade/15566525 - 4.00, 2 weeks

http://www.tf2outpost.com/trade/15375613 - 4.00, 3 weeks

http://www.tf2outpost.com/trade/15337740 - 4.00, 3 weeks

Here lie the classifieds: http://backpack.tf/classifieds/search/id/520006fbba25366831000004 <-- Many sellers below 4.00.

So yeah, 4.00 doesn't sell any more....

Stay classy.