If you have a good profit structure in place every job is making good money, we have a fixed reat schedule for all residential calls, emergency calls are the higher rate, we also charge a dispatch fee, plus the emergency call fee, and it all cash, or credit card, no billing on residential service, no exceptions, and working this way has proven to be profitable, and the larger percent of these customers are return business, if some calls you at 3 AM and you respond, $250 to 300 min is a great deal i most cases, only a few customers may complain, and they are the ones you don't want, or need.