whatever some bunny will pay for it...put it on ebay unreserved and problem solved, you will know exactly to the cent what its worth. only real test. otherwise its an old 80's Honda - 1500 bucks to most people.
if you can find two punters who want one...your in cash heaven.
sorry to be cynical but your the 2,304,765 person who has asked that question when the answer is staring them in the ebay