A small, rich, super selective school like Princeton in general does a better job than a big state university (UCLA, UCB) at allocating the best resources to the best college students. Schools at or near the bottom of that list (Princeton, Duke) will tend to give you more intimate, undergraduate-focused learning environments (with smaller classes, easier access to top faculty, better advising, less bureaucracy) than a big state university.
But of course is no clear-cut best choice that applies to all students. They’re all good. If UCLA is cheapest, and there are a few things about it you prefer to the other schools, then go with UCLA.