The thing is I couldn’t find any serious b/o. Except these 3 links, all the others were asking for a key or more so I was like WTF? Anyway here is some proof that I got.

http://www.tf2outpost.com/trade/8445233 - Selling painted one for 3 ref and still unsold

http://www.tf2outpost.com/trade/8347216 - Even 3.22 is unsold

http://www.tf2outpost.com/trade/7891995 - Same guy lowered the price to 3.11, still unsold.

Obviously other trade was unsuccessful.

In conclusion, 3.33 seem impossible for this hat. 3 ref also seem impossible but looks like it’s good price for now based on my proof