$400 meals are the "once a year tasting menu" at a michelin star restaurant. $1200 baseball tickets is season pass for lower deck seats. $60 uber charge is normal if you're going from Manhattan to, like, southern Brooklyn. Not weird to do that once a week or so if you go out.
those prices are all correct and typical and so high that it makes the authors point clear: you can't afford to "live it up" in NYC on a middling salary.