http://backpack.tf/classifieds/search/id/520050c7ba2536297c000005 (1 for 3.55, lots for 4, 2 for 4.33, 2 for 4.55, 1 for 4.77, lots for 5)

Proof:

Unsold:

5 ref:

http://www.tf2outpost.com/trade/16653860 (6 days)

http://www.tf2outpost.com/trade/16671631 (5 days)

http://www.tf2outpost.com/trade/16720880 (4 days)

http://www.tf2outpost.com/trade/16840795 (<1 day)

http://www.tf2outpost.com/trade/16792287 (1 day)

http://www.tf2outpost.com/trade/16577398 (1 week)

http://www.tf2outpost.com/trade/16813247 (1 day)

http://www.tf2outpost.com/trade/16603709 (1 week)

http://www.tf2outpost.com/trade/16571981 (1 week)

4.66 ref:

http://www.tf2outpost.com/trade/16704675 (4 days)

http://www.tf2outpost.com/trade/16729795 (3 days)

Selling:

4.33 ref:

http://www.tf2outpost.com/trade/16854982 (<1 day)

http://www.tf2outpost.com/trade/16702174 (4 days)

4 ref:

http://www.tf2outpost.com/trade/16713732 (4 days)

http://www.tf2outpost.com/trade/16798474 (1 day)

http://www.tf2outpost.com/trade/16856726 (<1 day)

http://www.tf2outpost.com/trade/16844659 (<1 day)

http://www.tf2outpost.com/trade/16857586 (<1 day)

http://www.tf2outpost.com/trade/15874187 (1 month, price has probably changed)

Pink and Lime are friends and should have the same price : )