I’ve currently got that and previously had opticoat. Unlike opticoat, it doesnt leave rain spots, and is even easier to keep clean. $800 is cheap though, so make sure you are getting full correction before application.
Fine shine detailing in Zetland (NSW). Has fantastic reviews and owner services luxury car dealerships.
Yes, they recommend getting paint correction just like any quality detailer would which can cost around 5-600 bucks. Well worth it though especially for resale value and even your own value of keeping your Tesla great.