I developed a standard answer to how much do you charge?

I quote a price. If they take it, no problem. If they complain and say something like, "We were thinking like, say $50.00" and I'm expected to drive 100 miles, I knew I would not be doing that gig at all, so I'd say, "Let me tell you the fable of the oats.If you want good quality, fresh oats, you have to pay top dollar. However, if you can settle for those that have been through the horse, they are much cheaper."