undercoat/rustproofing prices and where to?

[dr. d]

sir good day. i applied for car loan mitsubishi mirage g4 2018 MT and it is already approved then the dealer suggested that to have my unit undergo rustproofing worth 6k and paint protection worth 4k since he knew that im leavinv near the sea abot 300m from the shore..do i need to have rustproofing? wud like to ask ur opinion sir..thank u

unless the G4 is one of those cars that was manufactured without the now-standard factory rustproof...
no.

perhaps the question i beg to ask is, "was the mirage built with factory rustproof?"