The missus noticed tonight that some scumbag has keyed the passenger side of my car. There is about 4-6 inches on the front door and about 10-12 on the rear. It has gone through to the primer so polishing out is not an option. I have never had a smart repair done, are they any good and how much would it cost? Is it worth trying Langka blob eliminator if I fill the scratch with a touch up pen?