Not worth it, just a gimmick.
I worked at a Toyota dealership in the 90's when the money sucking scam was teflon paint sealant so no waxing or fading for 5 years. Out of curiosity I asked the installer if they recommend anything to the customers to maintain the finish after the teflon. He replied to use a good paste wax once or twice a year. :h
They also guaranteed no fading for 5 years. Wouldn't you know it, Toyota conveniently had a guaranteed no fading for 5 years policy. I can guess where they would send a customer complaining about fading during their covered period. :S
