-.66 offers-

http://www.tf2outpost.com/trade/9816029 offer of 2 rec

http://www.tf2outpost.com/trade/9801920 offer of 2 rec

http://www.tf2outpost.com/trade/9774103 offer of 2 rec

-denied lower then .66

http://www.tf2outpost.com/trade/8630832 denied offer of .44

http://www.tf2outpost.com/trade/9032374 denied offer of .44 multiple times

-conclusion-

There are very few left for sale and there is enough proof to abolish the low end of .44. the people selling on outpost will not sell for any less than .66 and there are not enough to make the high end price 1 ref. this means .66 is the most accurate price.