Jacob
What goes around comes around.
Exactly. And charging a proper rate usually means you do a better job and get known for it.You're not in business to do freebies. I'd say Jacob is spot on. Different industry but I've just priced a job that requires us to have confined space training. Client will be paying for the course, plus 3 man days to account for the time we've lost where we should have been doing something productive.
I've also found over the years that charging a proper rate keeps the "trouble" customers away.
I speak from experience of making most of the mistakes I'm advising against!
Ideally the client should be happy with what you've done and value for money, even if a little expensive!