It's really good if your in the trade too and have some contacts and skills.
I repainted my bumpers etc in the back garden with rattle cans, as they were pretty poorly done before.
It turned our really well once I polished all the dead midges that were stuck in the paint
they just love the smell of paint.
The expensive quotes from the body shop were a bit heavy.
I have seen these detailers doing the work on you tube, it's amazing how some will come to your works car park and do it there.
very impressive.