Not bad stuff - I bought a bottle , and one of their Mr Ron paint deep cleaner.
Probably a little better shine than Solvol Autosol, and it works out about half the price as you get 12 oz to the 3 oz in a tube of Solvol.
The paint cleaner / polish works well too- after 300,000 km mine was looking a little tired and it has brought it up a treat.
I also used it to give a final shine and seal to the wheel rims after the purple stuff and it works well here too - the shine is still good after a couple of months and a few washes with the car wash brush.