heh, no. Thats a rip. The prices I listed above are retail prices from SPMotorsports.com, and even NAPA sells rotors for $50/each. Stazi gives a good price on a great pad, but you can also get a set of rear pads for less hat $40 at NAPA and CarQuest stores if you wanted, and thats retail.
This shop must have a 100% markup on already markedup-retail products. I say he's taking it in the tailpipe, and should definately go somewhere else. And thats being more than fair.