If you tell them you have suicidal thoughts with severe intent, they have to treat you. Mostly like will not let you leave until a crisis team meets with you. There is a possibility that you will get a medical bill, but there are ways to get help for it. I would rather you be safe if you are seriously unable to stop yourself. This is more so a last resort situation but you will be treated.

I was forced to go to the hospital because of intent and they took it seriously.

Another idea would be to call a SUI hotline to help you when you are very close to edge. They are pretty helpful and may be able to help you find some counseling resources that you can afford. I would post their number but I can't get it while on my phone.