If he came to your house and demo'ed it and then he took it with him, I would say your responsibility ended at the front door. It worked fine until it was out of your sight.
It would be different if you had shipped it to him. Then it is your responsibility until he confirms it works at his house.
I think you are being more than generous in taking it back.
Those are my two cents worth anyway.
It would be different if you had shipped it to him. Then it is your responsibility until he confirms it works at his house.
I think you are being more than generous in taking it back.
Those are my two cents worth anyway.