Welcome to the V11 forum. If I understand you correctly, someone wants to buy the original mufflers that are still installed on your bike? I'm guessing that you are not in the US? In that case, I don't have a clue what they are worth where you are. I have a set of new ones in storage that I would ask $100 US for, but wouldn't expect to get. If someone *needed* them and couldn't afford to pay for them, I would give them away.