So many unsold in OP and even at the lower range of 2.33 ref, these hats are still unsold. 2-2.33 seems fine, even though there's only one trade selling for 2 ref (120+ views, 3 days and still unsold).

Selling for 2 ref:

http://www.tf2outpost.com/trade/8829306 (3 days)

Selling for 2.33 ref:

http://www.tf2outpost.com/trade/8883718 (1 day)

http://www.tf2outpost.com/trade/8900203 (6 hours)

http://www.tf2outpost.com/trade/8809010 (3 days)

http://www.tf2outpost.com/trade/8848378 (2 days)

http://www.tf2outpost.com/trade/8838208 (2 days)

http://www.tf2outpost.com/trade/8336812 (4 weeks inactive, 47 views)

http://backpack.tf/classifieds/search/1010/1/0 (only one, unsold for 6 days)

Unsold at 2.44 ref:

http://www.tf2outpost.com/trade/8647651 (1 week)

Unsold at 2.55 ref:

http://www.tf2outpost.com/trade/8790857 (4 days)

http://www.tf2outpost.com/trade/8895495 (13 hours)

http://www.tf2outpost.com/trade/8762899 (6 days)

http://www.tf2outpost.com/trade/8755745 (6 days)

http://www.tf2outpost.com/trade/8577914 (2 weeks)

Unsold at 2.66 ref:

http://www.tf2outpost.com/trade/8888408 (19 hours)

http://www.tf2outpost.com/trade/8879564 (1 day)

http://www.tf2outpost.com/trade/8634620 (1 week)

http://www.tf2outpost.com/trade/8566844 (2 weeks)

http://www.tf2outpost.com/trade/8737828 (1 week)

http://www.tf2outpost.com/trade/8527525 (2 weeks)