Anywhere better than all states?  They've got new for $460 ish (unsure of shipping cost) or "premium used" which are supposed to be cleaned and pressure tested for $375.  I checked my dealer and messick's pages just to see, but they don't list the rads on the parts breakdowns.  They show it, but it's not in the parts list.  Go figure.  I expect ~ $7-800 from CNH.