New vehicle coating push

Has anyone encountered salesperson pushing their ceramic coating or upholstery protection plans? Local dealer is pushing “ECP Plus diamond ceramic with graphene” for body and upholstery. I don’t know if it’s worth the roughly $1400 or not. Also, it seems to me like that they probably get a commission on every sale based on how they are promoting it. Thoughts? Experiences? Edit--all--thanks for your comments/insights. I am taking all of them to heart with full consideration. Seems consensus is to either to it yourself or take it somewhere that specializes in this and does this day in, day out. Although, I don't know if any of you have run across this being pushed on the sale.