You can do it a ton cheaper, depending on how pretty you want it to be. Like, you can scrounge up the materials for a coop damn near for free, and you shouldn’t need $100/m in feed if they’ve got an outdoor run with grass and you feed them kitchen scraps, unless you’ve got an absolute shitload of them.
Most folks do get upside-down on it, but it’s because they want a cute instagram-ready coop or substitute money for effort. And they aren’t willing to butcher and eat them after a couple years when they stop laying consistently.
Handle your chickens like country folk and you’ll do ok. Handle them like suburbanites, maybe not so much.