Since it is a sedan, and a non AMG one at that. I will say its worth $20k-$25k to me. Provided its like new, and I mean new I want to be able to eat off the underside. With that car you just go through it and change out a bunch of rubber parts like heater hoses ext, with OE MB replacements of course. After that it should be good to go. I'd try to run 1k miles per year onto it, just to keep it road ready.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200