I have seen a couple of posts advising people not to buy the Auto Glym Lifeshine kits from ebay at around £30.00. More than likely from dealers who enjoy the high commission on selling these.
Its true that if you pay the for a full package you get the after care pack and a 10 -year guarantee. The only snag is the full package costs £300 and most of that is pure profit.
So get yourself a PDI kit from ebay and apply the protection yourself. Its really easy to do with full instuctions supplied. Most if not all sellers provide fully sealed kits, but just check members feedback. The Lifeshine after care packs can be bought brand new for about £50.00.
You don't need to buy the After Care pack. If you wish, just buy the Autoglym products you want, when you want.
Autoglym ae excellent products but the £300 dealers charge for the Lifeshine package is in my view simply not worth it.