If you post this in the Diesel forum there will be a big collective laugh at the asking price. If you have the time and patience you should find a similar car for $8-9000. $12,000 is 96-97 E300 territory.

That's a great car if in good condition. Ideally you'd take it to a reputable independent MB shop for a prepurchase inspection.

What exactly does certification buy you? I might be tempted by a one year bumper-to-bumper warranty but I expect certification means brakes and tires pass inspection and the exterior bulbs work :/

Sixto
93 300SD 3.0