for $600, that's totally reasonable price, the rotor and caliper both packages weights about 100lbs, yes they look small, but try to lift them up all in one box...the shipping alone will cost over $100, the all new seal and rings will cost over $150, then all the labor of doing the stuff, try to take one of those rear caliper apart, then you will know how long it's gonna take to apart and back together on each one and we have done so many of them now...so if you never done one, don't even try, if you break the inner c-clip, then your DONE, prob gotta buy a whole new caliper....