Well, I'm not in America & our economics are somewhat different here, but I wish I could get $55 an hour.
Most of my jobs I price at about £50 for a full day's work (that's about $75) or pro rata, plus a little for gas money if it's more than 20 miles or so away. I usually add about 10% to materials to allow for odds and ends like PVC tape, sleeving, screws etc.
