I've used flying locksmith a few times. I called to get a quote on re-keying my front door for $100. The locksmith was pleasant and unlocked my door within 3 minutes and rejected took another 7 minutes. He asked me to sign but with no invoice or quote. I agreed to sign since I was quoted $100 over the phone. Once I signed he told me it would be $130. The locksmith should have given the the price before he started the job and I didn't agree or thought it was ethical to sign a blank form without reviewing the terms. I would not refer or use them in the future.
Yesterday, the owner stopped by to give me a card with gift certificate along with $30 cash. She was very apologetic. I will use them in the future.