Not too bad mate. It is about £6 for a 100ml bottle. It does the whole car, glass, plastic, paint. It has a light mist sprayer. I did the whole car and probably got enough for 2-3 more goes.
All started when someone recommended their black trim restorer (the black trim on my scoob and Honda were almost grey). The restorer was obscenely expensive but was very good: blacktrimrestorer
I didn't spend £6 on the bottle I got this £40 set. I used a few of the bits in the pack and it was all very impressive :)
http://www.theultimatefinish.co.uk/gtechniq/essentials-kit.aspx
P.S. My car pics are from my Iphone5...so not the best