Selling:

http://www.tf2outpost.com/trade/9906806 (3.66)

http://www.tf2outpost.com/trade/9888046 (3.66)

http://www.tf2outpost.com/trade/9901115 (3.88)

http://www.tf2outpost.com/trade/9817849 (3.66)

http://www.tf2outpost.com/trade/9885122 (3.88)

http://www.tf2outpost.com/trade/9897682 (3.77)

http://www.tf2outpost.com/trade/9893101 (~3.83)

http://backpack.tf/classifieds/search/fancy%20dress (1 at 3.66, 1 at 3.88)

Unsold:

http://www.tf2outpost.com/trade/9818239 (3.66)

http://www.tf2outpost.com/trade/9819967 (3.66)

http://www.tf2outpost.com/trade/9845409 (3.77)

http://www.tf2outpost.com/trade/9818645 (4 Ref)

http://www.tf2outpost.com/trade/9622004 (Rejected 3.66)

http://www.tf2outpost.com/trade/9825302 (Rejected 3.66)

http://www.tf2outpost.com/trade/9807281 (3.66-4)

http://www.tf2outpost.com/trade/9771616 (4 Ref)

http://www.tf2outpost.com/trade/9857828 (4 Ref)

http://www.tf2outpost.com/trade/9499547 (4 Ref)

http://www.tf2outpost.com/trade/9881890 (4 Ref)

http://www.tf2outpost.com/trade/9880668 (4 Ref)

http://www.tf2outpost.com/trade/9869203 (4 Ref)

http://www.tf2outpost.com/trade/9814849 (4 Ref)

http://www.tf2outpost.com/trade/9634870 (4 Ref)

http://www.tf2outpost.com/trade/9749977 (4 Ref)

http://www.tf2outpost.com/trade/9860716 (4 Ref)

http://www.tf2outpost.com/trade/9833816 (4 Ref)

http://www.tf2outpost.com/trade/9877598 (4 Ref)

http://www.tf2outpost.com/trade/9694845 (4 Ref)

http://www.tf2outpost.com/trade/9845541 (4 Ref)

http://www.tf2outpost.com/trade/9824883 (4 Ref)

http://www.tf2outpost.com/trade/9816791 (4 Ref)

http://www.tf2outpost.com/trade/9789655 (4 Ref)

Successful Buyers:

http://www.tf2outpost.com/trade/8298184 (3.33 and 3.66 offer)

http://www.tf2outpost.com/trade/9124998 (3.66 offer)

http://www.tf2outpost.com/trade/8411239 (2.55)

http://www.tf2outpost.com/trade/8373323 (3 Ref)

http://www.tf2outpost.com/trade/9552076 (2.66)

http://www.tf2outpost.com/trade/9159979 (3.11)

http://www.tf2outpost.com/trade/8091784 (3.11)

http://www.tf2outpost.com/trade/9460294 (3.33)

http://www.tf2outpost.com/trade/9714112 (3 Ref)

http://www.tf2outpost.com/trade/9871184 (3.33 offer)

http://www.tf2outpost.com/trade/9878711 ( 3 Ref)

http://www.tf2outpost.com/trade/9763661 (3.33)

With many selling below 4, many unsold at 4, and incredible buyer success around 3 flat, I think a price drop is in order.