How much would it cost for a battery and starter

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. First, I would say that it would be smartest to have the vehicle professionally checked for concerns before purchasing it. You could be buying a $1,000 nightmare. Being a 20 year old Mercedes, there is nothing inexpensive about maintenance and repairs that are to be expected for a vehicle of this vintage. My suggestion would be to avoid something this complex and costly and acquire something more reasonable. However, have a shop near you check it out if you'd like to pursue it. But definitely do not commit to purchasing anything you can't verify first. For pricing estimates relative to a vehicle, concern and location, go to: www.repairpal.com/estimator For a shop near you -- https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.