check the NADA home page. just google NADA and go to motorcycles, then vintage cycles. it gives prices. should be in the ballpark. i plan on puchasing a 1972 R5C 350 in good to very good shape for $900 US this week. the person i´m buying from paid $1200 two years ago and had about $700 in work done on it. he is selling due to financial needs.