I paid $220 for my slotted/cross drilled rotors:
http://www.ryanmacdonald.com/car/howto/brake/brake4.JPG
The dealer won't put them on because they aren't a factory certified part, sold from suby. Just call up your local brake place and have them do it.
What kind of noise are you hearing? A squeel? Warped rotor's generally don't give any noise off. They will just give a pulsing feeling to your pedal/steering wheel. If they get real bad (like my old set) it will shake the wheel back and forth when you brake. However you shouldn't hear any noise from them at all. Sounds like just noisy pads to me. If its a scraping noise (not high pitched), it might be that you have a rock or a piece of broken pad stuck between your rotor and your pad. It could be grinding a nice big ring into your rotor and making the noise. Best bet is just to take it in and have them figure out what is wrong. A decent place (seeing as you just did it) will warranty their work and fix the problem.
Also don't be afraid to just put them on yourself. It's not tough, and will save you a few bucks. I wrote up a howto on this here:
http://www.ryanmacdonald.com/car/howto/brake/brake.html