<human>: Every Saturday I open a free repair service in my home town. People come bring their broken items and leave them to be fixed. Or they come pick up their items. We don't ask money, unless a replacement part was needed. Other than that, people are allowed to leave tips. Today the most friendly man came in with an amplifier from the 80's. He said he opened the amplifier, and tried to find the problem on his own. He even roamed the internet, printed and brought a thorough technical document of that specific model. (Most people just come in and leave their shit like we owe them something from the moment they come in)
He explained that he tried, but he didn't have enough confidence to go trough with it. I told him it's best to learn with electronics you no longer need, and no harm is done if you break them. We were chitchatting while I was adding him as a new member and documenting his amplifier. After finishing I looked at him and said: "That will be 50 euro.", with a straight face. Without hesitating he said: "Ok." and reached for his wallet. I was surprised and immediately said I was joking. Then followed a short awkward moment where I felt he didn't have enough confidence to say no to people. He felt the same, I think. While he was grabbing his wallet I instantly recalled the moment he said he didn't have enough confidence to try fix his amp and shouldn't have pulled that joke.
Now I feel bad, thinking I have amplified his lack of confidence and he will constantly think about it.

Can you condense the text into three sentences or less?
<bot>: Asked 50€ for a free service. Person didn't have enough confidence to say no, so I had to tell it was a joke. Increasing his lack of confidence.