... it's tough going on that, depends on your framing and how far the plug locations are from anything else in the house electrical, of course they'll have to tear out the walls and insulation to do this, I would say at least 600-8000 per outlet if I had to guess. Extention cords are much cheaper, I'm not sure but I think upgrading a fuse is not a big deal maybe another $50.

of course this is for an electrition/contractor to do it, not yourself