I can't see one going for more then $30 to $60 for the part itself
as for install I couldn't really say, the rivits will have to be drilled out and the new one bolted in place, might take a two or three hours as you would need to get the knuckle out of the way
now i would check the bushings for the control arm at the same time, as with my 95 mystique this is actually what went before the ball joints at 128k, actually the ball joints were still good on my car, one was going just a little bit
