It's not cheap!
It's what my friend used on his 458 Speciale. Honestly the quality of it is extremely good and the car is in a slightly unusual red, Rosso Fiorano a kind of pearlescent cherry red. It still looks the dogs danglies with the film applied to that colour.
However, I just wouldn't bother with anything, take care of the car (use whatever products you can, get a rotary polisher etc) and if needs be when it comes to selling, have a front end respray if there are stone chips.