$500!!!! whatever. do you live at home? if so, you really need to learn to do this stuff yourself. if you are like most of us when we we're at your age you won't have the cash to pay that much for repairs you can take care of. having a friend/parent showing you is the best method. Dealerships have the proper trained mechanics and oem parts that is why you pay a lot there as they are going to do it by the book, and they are trying to make money as well. Hell a Haynes or Chilton manual would be a good read to get you started as they walk you through the repair. Parts for this job should have been around 30-50 bucks unless you got the Nissan pads.