By your description the wheelwells are full of gaping holes? Complete rust-through? If the wheelwells look like this the rest of the underside is likely way far gone too. Not worth anything at all unless you just want the motor and interior. There are too many solid MB's out there to bother fixing a total bucket. RT

__________________
When all else fails, vote from the rooftops!
84' Mercedes Benz 300D Anthracite/black, 171K
03' Volkswagen Jetta TDI blue/black, 93K
93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K