Apparently, 1.66 ref is unheard of.

2 ref (selling or sold):

http://www.tf2outpost.com/trade/5773897 (plenty of adds)

http://www.tf2outpost.com/trade/10681506

http://www.tf2outpost.com/trade/6184355 (multiple adds, seller holding on to it for other offers)

http://www.tf2outpost.com/trade/10599388 (being added)

http://www.tf2outpost.com/trade/10423400 (being added)

http://www.tf2outpost.com/trade/10545702 (sold

Sold out at 2.33 ref:

http://www.tf2outpost.com/trade/9805354 (rejected 2 ref)

Selling at 2.66 ref:

http://www.tf2outpost.com/trade/10617523 (sold 5, 1 left)

Being offered 2 ref:

http://www.tf2outpost.com/trade/4982924

http://www.tf2outpost.com/trade/5265886

http://www.tf2outpost.com/trade/8415855

http://www.tf2outpost.com/trade/10583703 (rejected)

Being offered more than 2 ref:

http://www.tf2outpost.com/trade/10547658 (TOD + metal)

due to many still selling at 2 ref, I placed a flat price for now.