I come up with 2.3 hrs for one and 4.4 hrs for both, and it looks like about $345 each. With labor at about $100/hr (in my area) it's about $575 plus tax on parts for one and about $1130 plus tax for both. Good thing you only need one by the sound of it. Make SURE that the noise is in the control arm, of course, at that price. One more thing, this does not include alignment which you can find out locally by calling an alignment shop in your area or the people who replace it may be able to tell you.