we've been doing flat rate on residential for about 8 yrs. and that is exactly how it is done. Unfortunately, a few too many companies see flat rate as a way to R&R (Rape and Run) a customer. They have incredibly too much overhead, advertise like mad, and come in with billable hourly rates of $300+ (that being said, they are only productive 3 hrs per day, so they are only making $900) But they are hurting our industry and giving us all a black eye.