To my understanding they just give a paper now that you have to sign. It's an agreement that "they don't know the price yet because it's ER, and so they will tell you later"
Also, I’ve seen ERs that have patients sign little digital signature pads without ever showing the patients the legalese in question. I don’t see how that could possibly hold up in court.
It was higher that the price on the website, which they supposed to provide. But they didn't care as they explained the website is simply outdated.