If you're specifically *looking* for evidence of it on the car (mine's the Desert Mist; may vary on darker or lighter colors, probably lighter), you can see it on the hood line (because it comes up about a foot on the hood). But to the casual observer / passer-by, they'll never know anything was on there.
I've had it on just a couple of weeks now. Mine was $180 installed for the 'standard' kit (18" across front of hood, trim pieces adjacent to grille, side mirrors).
The kits come precut to size, for specific model.
There are two other kits available - the 'long hood' kit, which comes up about halfway up the hood, rest is as the 'standard' kit; and the 'lower fascia / grille' kit. Both of these were quoted at $480 installed. I decided to live with the 'standard' kit for a bit before popping $480 for something that I didn't see on a lot of cars, and so had no point of reference for longevity, etc.
Believe it or not, I already had two tiny chips in the paint by the time I had this installed.
One, I knew about, and used a touchup pen on it; the other was unbeknownst to me. Both were level with the rest of the paint surface after install (the film covered both areas).