To dip a body from a full frame car the body alone is about $1600.00, for each part ie door fender they get about $150 per part a little more for a large part like a hood.
To dip a unibody shell like the beemer it was $2400 for the shell, their comment was you wont have to restore a frame so this is how they justify charging more?
All I can say is it saves me time from burning out by dipping them and the job is much more professional and ALL of the rust is removed.
Cheers!
Vern