Most likely (even with grinding) your rotors do not need to be replaced, unless they have been grinding for years. They just need to be turned, I get these done at O'Reilly Auto Parts for like $15 a rotor I think. I don't recall the price of the pads, but they give them a lifetime warranty (if you are hard on your brakes or plan to keep the car for a loooong time, then the warranty will kick in when you go to replace them again), and they were not that expensive. I changed out my own brake pads, it's one of the easiest things to do on a car. Don't take it to the stealership, find another shop, it should be much much cheaper.
darren