You could keep an eye out for these to come up again, I suspect there will be more.
http://cnczone.com/forums/showthread...ighlight=hiwin
I have tried nook rolled and was not very impressed with the quality of the one's I got.
The one's this guy is selling is the next best thing to precision ground in my opinion, which usually cost a fortune.
Watch out for rolled that do not have a pre-loaded ballnut.
Al.