Well the whole song and dance is that all of it comes with a 5 year guarantee. You get a sap stain on the outside, its taken care of. Salt stain on the inside, taken care of. Any sort of stains whatsoever, taken care of.
If everyone thinks my money is better spent elsewhere, I'll pass on it but I am looking for some more opinions on this :-)
If you're looking for exterior protection, conside Optimum's Opti-Coat Pro. Permanent paint protection with no need to wax. Mine is almost 2 years old and after a wash, still looks glossy. I haven't found the need to wax (although you can, it doesn't really add any more shine, just a slicker feel to the Opti-Coat). It also seems to keep the dirt down and it comes off more easily when washed. I paid my detailer $300 for the full car including the wheels.