Have you thought about all the money you might save if you renewed them yourself by buying a polishing kit? Last weekend I went to the local Canadian Tire store, I'm sure you have something similar where you live, bought a bottle of polish and went to work. In about an hour, I had my headlights almost as good as new, with all of the yellow gone completely. There are only a few small pits in the lens that I will go after when I get another block of time. I might have spent about $20 Canadian to do so. I guess it all depends upon how yellow they are, how much sweat equity you want to put into the car, and how much you either want to spend or save.