Just bought a sedan - any opinions on dealer option for undercoating & paint protection?
If yes, how much should you pay for it ... Vancouver area.
Aftermarket better?

 

I would recommend a clear bra from 3M or equivalent to prevent stone chips ($650 to $1200 depending what you have done). Other than that, the rest of the car should be fine. The manufacturer installed rust protection on cars today is very good. Wash the car once a week and you should be fine.