Re: 25$ an outlet ??
I don't believe you can compare a 2400 square foot rough-in to a "5 hole" rough-in, or a 14 hole remodel.
Once you're dealing with an efficient crew, a steady builder, and a tract-house with 160-200 holes in it, $25/hole isn't so bad:
180 holes @ $25 hole = $4500
Labor = $1440 rough and trim
That leaves $3060 for materials and permits. Since it's a new house, chances are the builder has needed to pull the permit, depending on the rules of the area you're in.
$3060 for overhead and materials seems sufficient.
I see it like this: When you go to the hardware store and buy a 25' box of romex, you pay more per unit than if you make arrangements and purchase a pallet of romex.
Remodeling is like selling a customer $25 boxes of romex. It costs more per unit (hour of time, or hole, take your pick), because of economy of scale multiplied by difficulty of work.
Roughing and trimming tract homes is like selling the GC a pallet of romex. Much production can be achieved in a short period, leading to a smaller overall cost per unit to the GC than if he called and said, "I'd like you to drive out and rough-in the kitchen of this house, wait, and then come back and rough-in the living room, wait, and then..." You'd charge outlandish prices for such an arrangement, because of the massive travel time, unload/load time, etc.
For a simple home, what is a fair price? You can't tell me you guys charge remodeling prices for new work. If that's true, and you do service work/remodeling exclusively, perhaps that's why.
I am just trying to get some more perspective, not trying to pick a fight or anything.
It's all well and good to say "$35 a hole is fair", but without a clear understanding of how much it costs to rough a hole, at what scale, it all sounds a little subjective. If your overhead is unnaturally or unnecessarily high, who's fault is that?