Hi everyone. I hope someone can help me. My good friend at work has a cannondale black lightning 1986. we have worked together for over 20 years so I know how good of care he took of this bike.I would not hesitate to call it mint condition. He hasn't rode it in 10 years and in the last few I have tried to by it from him. well today he told me he wants to sell it. can someone tell me what a fair price would be. I don't want to give him too little but I also don't want to pay too much.. I thank you in advance for your help