I have had Modesta coatings on all my cars since i discovered ceramic coatings, 7 cars and counting.
My take on it is that when you strip away some of the more exaggerated claims regarding ceramic coatings (Modesta doesn’t make any BS claims that i’ve read, but some other brands do), the product meets expectations and has value. It certainly makes car care MUCH easier and the sacrificial outer layer has protected me from surface damage (note - not impacts but contamination and etching).
Is it worth it? Personally, for me, it is. I’m not willing to compromise on the quality of my cars’ finish, so i’m essentially trading money for my time. Other people think it’s crazy to spend that much money for something they can do themselves, and they’re not wrong either.
The one other observation i have is that I really do think installers should be willing to work with you on the overall cost, depending on the job. The overwhelming portion of the installer’s cost is labor, particularly if a lot of paint correction is needed, so if you’re taking a clean car to him without a lot of damage or marring, he should pass some of his savings to you. I’m not sure if that’s what installers generally do, but mine certainly does work with me...although of course i’m not sure if what i’m getting is a “your car is already clean” discount, or a “repeat customer” discount....