Still don't know why you would want a Benz for that. My AWD Soob wagon doubles as my winter car.
Anyway, the price doesn't sound too bad. That is actually kind of low mileage. Ask for service records!!!!! That is the biggest thing. If he can't produce any records, low ball him on that figure.

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R