I found this doing some diging. I have no idea if it is still good info but you can call and check.
I got mine from Chadwick Reamers 877-492-8249
85020 Taper 1.5"/ft. Range 7/16"-1". Spiral cut, 6 flute. 1/2" shank with hole and handle pin, 01 tool steel treated to Rockwell 60 hardness. $50.40.
85500 Taper 2"/foot. Range 3/8"-1-1/8". $70.88.
I have both and I'm happy with them. These are the best prices I was able to find.
I also found this
and this with no price listed
I'm going to be buying one soon. I just need to be home during buisness hours...