Hubbla hubbla hubbla!!!!!!! Okay, that's enough. I want to prove that 1.66 is possible. I'll keep 2 ref as a high end from the previous suggestion.

http://backpack.tf/classifieds/search/powdered .. 3 users selling below 2 ref

Sellers below 1.66:

None for now.

Sold below 1.66:

http://www.tf2outpost.com/trade/12448598

http://www.tf2outpost.com/trade/12436880

http://www.tf2outpost.com/trade/12425351 for a connoisseur's cap (1.33)

Sellers for 1.66:

http://www.tf2outpost.com/trade/12450086

http://www.tf2outpost.com/trade/12450906

http://www.tf2outpost.com/trade/12449459

http://www.tf2outpost.com/trade/12417071

http://bazaar.tf/trade/293745

Sold for 1.66:

http://www.tf2outpost.com/trade/12431907 1.77 but negotiable (not sure how much this got sold)

http://www.tf2outpost.com/trade/12423972

http://www.tf2outpost.com/trade/12422333

http://www.tf2outpost.com/trade/12419601

http://www.tf2outpost.com/trade/12406978

Sellers above 1.66:

http://www.tf2outpost.com/trade/12450670 1.88

http://www.tf2outpost.com/trade/12452260 1.77

Sold for 2 ref:

http://www.tf2outpost.com/trade/12430297

http://www.tf2outpost.com/trade/12440890 Next owner isn't on the history, but the item is not in his/her backpack

http://www.tf2outpost.com/trade/12420854 Next owner unknown, but items are not in his/her backpack

BUYERS:

http://www.tf2outpost.com/trade/12422507 1.11, bought 1

http://www.tf2outpost.com/trade/12024874 1.33, someone added

http://www.tf2outpost.com/trade/11894146 1.33, someone added

http://www.tf2outpost.com/trade/12375585 1.33, someone willing to trade

That's all for now. Have a nice day/night! :)

Opinions are appreciated :D

NOTE: I don't set it to 1.33 because 1.33 seems like a quicksell for now. 1.66 seems good to be added as a low end. 2 ref will still be as the high end, because market is still flooded with it. And most of the 2 ref trades are still new and fresh.