Here in northwest Illinois, away from the big cities, I charge 24.50 per outlet (also called cut, or hole). This includes the devices but no light fixtures. This is for wood frame structures wired with NM-B. For services I charge roughly $10 per amp. Believe it or not this figure works from 100 to 2000 amps and is usually competitive for my area. Our POCO supplies and installs the residential services either OH or UG but we have to supply commercial service laterals for UG to the pole or transformer and supply the precast the transformer pad. I am very interested in how things are done in other areas.