I have a similar product on my Dodge Durango. It's called Optimum Opti-coat Pro. I didn't dig into your product much, but it looks like it's pretty much the exact same thing, just different company.
I've had it for 2 years on my car, it works as designed yet. It's basically another clear coat, but it's harder and thicker than actual clear coat. It also must be properly cleaned every so often. Contaminates still collect on the surface. It is easier to get the contaminates off. It is not scratch proof. Poor washing technique will still result in spider scratches. It does not make the paint any shinier. Rocks and stones will easily chip it away like they do with regular paint. Waxing is not required ever with these coatings. In fact wax does not stick well at all. The wax will last less than half of what wax would normally last on clear coat.
They are good products to protect the paint, but not a cure all. If you want rock protection for the front cap, look into a clear film to put on the cap.
It cost me ~$1000 for my entire Durango, windows, wheels, plastic, etc. The product itself is actually inexpensive. The bulk of the cost comes from labor to correct the paint before applied. And paint defects that aren't corrected will be permanently under the coating. All vehicles, including brand spanking new ones, have paint defects. My car was brand new when opti coat was applied.
I researched these products greatly. They really aren't meant for the guy that likes to wash and wax his vehicles. This is meant for the guys that don't like doing that stuff, but still like having nice looking cars.