As a former professional detailer of high end vehicles, I wouldn't even step in this dealership because of their "Zaktek" scams.
I won't nerd out on you, but just do your research. I used to get so many clients that bought into this crap and would spend 20 minutes showing them the truth. Honestly, it was easy money for me because I booked near 100% new clients after educating them.
Go to any reputable independent detailer (not the guys at the car wash, they are the same scammers, I'm talking shops that only detail) and they'll explain and sell you a far superior product.
BTW, my detailing business was in San Diego and I detail my own cars, so I have no experience with shops out here.