While you can do mostly whatever you want at your business, I would be hesitant about charging a fee. I have a customer with bill breakers whom I admire due to his business acumen. The guy really knows customers. He has a wash and gas stations. he told me tha putting in the breakers was one of the best thing he ever did. He would see customers come up to his
changers with a $20 and walk away because they didn't want a pocket of quarters. The first year he had the machine about $70,000 went through it. Just one example, but by a good observer. And by the way, I hate those places that charge to count my change. I belong to a credit union that will do $200 for free. So the once a year I do my pocket change I do the limit at the four local locations. Most people hate extra fees. Try flying somewhere now and you'll see what I mean.