Do you have a shop to work in? If you are fixed location, this is a great service to get into, because people buy a new car and want the clear bra, and bring you a car with the Dealer Installed Swirl Option (DISO), and then you can upsell them a correction job so the swirls aren't trapped under the clear bra.
But there is also some investment if you want to do the job right, and then how do you get customers? If you have existing customers, they may come to you if they buy a new car, but you also have to bring in those people who have never come to you but just bought a new car and need PPF...and then you need to convert them to regular wash/detail customers.