Thank you for the replies and the greetings. Your opinions pretty much matched what I was thinking. Especially the comment about maintaining the dealers's bottom line.
I had the opportunity to check with a colleague that owns a vehicle detailing company. Not the trailer-mounted type; all details are done inside his climate-controlled facility. We've had our autos in to him and been very happy with the results. So I asked him about the specific package this dealer was offering and also what he might offer. His response was interesting.
He actually knows the owner of the company and the chemist that developed the Platinum Protection Package. They had him try it out for his use in detailing. He rejected it. He uses Nanoskin by Megatrend, which he can apply for about 1/2 the cost. Still, at that price I think I can apply a coat of Walbernize every 3 or 4 months.