There's a solid looking '71 Coupe on Ebay right now hovering around $1200. This looks like a great starting point to build a nice car or probably a nice beater/driver car as it is. In true FIAT enthusiast tradition, it looks as if it has the best (or at least, crowd favorite) parts pulled from all the series cars - 2L block ('79-up) , 1.8 head ('74-'78), 34DMSA ('74), Spider 2000 steering wheel ('79-up), and a nice set of period rims. The seats look like they were pulled from an earlier Coupe and the interior has all the usual rips & cracks. The seller notes some transmission glitches, I believe. The real value is in the integrity of the body. Obviously, it's hard to tell a lot from pictures & when the car has been sprayed in flat black, but coming from California & if the level of detail & relative thoughtfulness of the parts selection is any indicator, this car has all the makings to be one to buy & finish to taste!
Check it out on Ebay, # 110253903355
UPDATE: This worthy Coupe sold on Ebay May 27, 2008 for $2,750