I had the equivalant Autoglym system applied to my car when I bought it. For some reason after I agreed a price for the car the dealer then added the system into the final price, with no extra cost to me. I got the impression that some dealers are targetted on how many of these sort of upgrades they sell. As it was free I went along with it.
I am very careful with my cars paintwork, it is always handwashed by me. In winter it gets snowfoamed before washing etc. I don’t think the finish these systems give is any better or tougher than a decent wax. However it appeared to be applied very well, and 18 months on the paintwork is still in great condition with no swirl marks – but that is down to me not the system.
Overall the best thing about it was a large bag full of Autoglym cleaning stuff that is included in the system price (admittedly I haven’t used half of it). So for free I would go for it, but no way would I pay for it.