The term ceramic coating cover a wide range of products, anywhere from the full monty (paint correction, de-iron, clay bar prep and then hand application of tiny vials of fluid that cost arms and legs) to 10 minute job (spritz on / wash off after washing car).
I have done the 10 minute version and like Kajtek1 said it is easier, I get good beading for 6 months and it is cheap and easy to apply. Lots of manufacturers have jumped on the ceramic bandwagon. Buyer beware.