If you cant do the work yourself- and many who thought they could not have done so becaue of advice learned here on this forum, then you really need to try and find a good independant MB shop. Look at the local shop arm of this forum. Accumulators are no more than $120 each- not $180 each. Struts do not go bad often- accumulators do. You may only need one. Take a look at the diesel forum and search "SLS" or "wagon self leveling system". I've had three wagons like yours, and you needn't spend a arm a leg in most cases to get it running and driving correctly.