what you have to think, is that one of Paul Daltons details he charged £7,000-£7,500 on a Phantom (IIRC). The owner thought the only way to restore the car was with a re-spray, and RR wanted £35k to spray the car, so Paul's quote of £7k(ish) was far far cheaper.
As for these £8k waxes etc, yes they are refillable for life, at £500 a pop for "shipping and insurance". I have a tub of Zymol, and it is a very nice experience applying it. Never tried anything worth more than £200 yet though