These are dropping as more are uncreated and the initial excitement fades. It's possible to find trades for 1.66, but 2 ref is the most common price.

Classifieds

http://backpack.tf/classifieds/search/772/11/0 - Several at 2 ref, one at 1.66

Unsold for 2.66 ref

http://www.tf2outpost.com/trade/7618606 - Unsold for 2.66

http://www.tf2outpost.com/trade/7272872 - Unsold (recently) for 2.66

http://www.tf2outpost.com/trade/7624362 - Unsold for 2.66

Sold/Selling for 2 ref

http://www.tf2outpost.com/trade/7593728 - Selling for 2 ref

http://www.tf2outpost.com/trade/7624298 - Selling for 2 ref

http://www.tf2outpost.com/trade/7600183 - Selling for 2 ref

http://www.tf2outpost.com/trade/7522323 - Sold for 2 ref

Sold for 1.66

http://www.tf2outpost.com/trade/7630839 - Sold for 1.66

Falling. 1.66 - 2 is a better range for the current market. Very rare to find these sold for 2.66.