That depends on what it will take to restore it (subtract that cost from the retail value of the restored bike...), or how much you think the parts will net you, if you piece it out (don't forget to give yourself a healthy profit margin for your efforts!). Honestly, I would say $100, but that is just my 'gut feeling', not based on any calculations whatsoever. Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII