Proof in comments:

Selling for 2.66 ref:

http://www.tf2outpost.com/trade/9639777

Selling for 2.77 ref:

http://www.tf2outpost.com/trade/9628887

Selling for 3 ref:

http://www.tf2outpost.com/trade/9516806 (5 days and finally had one add)

http://www.tf2outpost.com/trade/9652064

http://www.tf2outpost.com/trade/9646289

http://www.tf2outpost.com/trade/9640397

http://www.tf2outpost.com/trade/9640169

http://www.tf2outpost.com/trade/9476696

http://www.tf2outpost.com/trade/9376461

Selling for 3.11 ref:

http://www.tf2outpost.com/trade/9609355

Sold for 3.11 ref:

http://www.tf2outpost.com/trade/9633533

Selling for 3.22 ref:

http://www.tf2outpost.com/trade/9607160 (1 day)

http://www.tf2outpost.com/trade/9651352

http://www.tf2outpost.com/trade/9582723 (2 days)

Unsold for 3.33 ref:

http://www.tf2outpost.com/trade/9575504 (3 days)

http://www.tf2outpost.com/trade/9566786 (3 days)

http://www.tf2outpost.com/trade/9488570 (6 days)

http://www.tf2outpost.com/trade/9649843 (5 hours)

http://www.tf2outpost.com/trade/9570699 (3 days)

http://www.tf2outpost.com/trade/9637674 (15 hours)

http://www.tf2outpost.com/trade/9381453 (1 week)

http://www.tf2outpost.com/trade/9639796 (13 hours)

http://www.tf2outpost.com/trade/9531216 (5 days)

http://www.tf2outpost.com/trade/9629507 (21 hours)

Selling for 3-3.33 ref (backpack.tf price):

http://www.tf2outpost.com/trade/9548117 (4 days)

http://www.tf2outpost.com/trade/9581300 (3 days)

Buying at 3 ref:

http://www.tf2outpost.com/trade/8961135