No one is selling them for 0.33 ref anymore. Surprisingly, there is a demand for it and most offers of 0.66 even get rejected. 1 ref is definitely possible.

Selling for 0.66 ref:

http://www.tf2outpost.com/trade/8577562 (sold actually, I asked him)

http://www.tf2outpost.com/trade/8593657

http://www.tf2outpost.com/trade/8593768

Selling for 0.77 ref:

http://www.tf2outpost.com/trade/8486723

Selling for 1 ref:

http://www.tf2outpost.com/trade/8587342

Sold plenty at 1 ref:

http://www.tf2outpost.com/trade/7966135

Sold plenty at 1.33 ref:

http://www.tf2outpost.com/trade/5339812

Being offered 0.66 ref:

http://www.tf2outpost.com/trade/8265125

http://www.tf2outpost.com/trade/8473269

http://www.tf2outpost.com/trade/6657262

http://www.tf2outpost.com/trade/7553208

http://www.tf2outpost.com/trade/8594521

Being offered 1 ref:

http://www.tf2outpost.com/trade/7994421

http://www.tf2outpost.com/trade/7278522 (4 weeks ago, ignore this if you want)

http://www.tf2outpost.com/trade/8154783 (1-1.22 ref)

My very own trade (sold them for 1 ref):

http://imgur.com/Ar30uA9,nUFlCDr

http://imgur.com/Ar30uA9,nUFlCDr#1

I apologize for my use of words but, apparently there are lots of retards rather ignorant people who thinks that this tradable gibus is rare and want to sell them for a key and above. If you are an innocent tf2 player who knows nothing about this gibus and suddenly came across this post, this is not rare and please do not get fooled by what other people say about it being 'rare'. Thank you and have a wonderful day.