yes, cuz there are phillips head screws that hold the rotors in place. they usually get frozen from rust and the only way to take them out is to get an impact driver(with a phillips head) to break them free. you can also drill them out of they get stuck.

just do the work your self like everyone said. its really simple and once you do one, you can do the rest easily. there is a special tool that is used to turn the piston on the rear calipers in, usually sold at all parts stores for like $5.

also, about the rotors from EBAY, stay away from the brembo rotors that are advertised as being cross drilled and slotted. those companies usually buy the brembo blanks(plain rotors) and they machine them in their own shop. not a good thing.