I agree with the others, I doubt your shocks are worn with such low mileage. I just changed mine, they were 16 years old with nearly 200,000 miles, and they were just starting to go, not bad, but not good enough for any car I want to drive. Yours should still be good for years. These aren't crappy american car shocks which are barely made strong enough to hold the car up to begin with. I would check other other components first. Donald has some good suggestions.
1995 E420 - retired
1986 420SEL - retired