I really do not know how much a WSR88D is, but would venture to guess in the 100's of thousands. I did hear that there are smaller and less powerful ones you can get for around 10K, but I do not have that laying around at the moment.
The stumbiling blocks for the NWS to put one up here is cost and to some extent politics.
Mt. Horace Greely would be a perfect locale as it is the site of an old Air Force early warning radar base. Plenty of infrastructure still there to support it.
-John