Buick Lucerne

Your car only has shocks in the rear. the fronts are struts. The rears are air suspension shocks so they cast considerably more and there are 3 different suspensions with considerably different costs. They range from $145 to $730 for the part but the labor is minimal, under 1 hour per side.

thank you, my bill for the part is $700, I was outraged, your answer has calmed my frustration.
Since I fixed the problem, the ride is incredible.