This is a great business. I've been there a few times for various lock related needs. One time I came there with my vehicle and he came right out and solved my problem. Another time I came in to have him re-key a new vehicle lock, he looked at the old one and said "Its just the tumbler is broken" . So instead of $75 for the new one, he charged $25 to fix the old one.
Honest and fair would be the words I'd use.