Boy...they aure know how to make their money in the USA !
No wonder so many go untreated.
A lot of people only stay overnight. I have heard of people going home the same day! But that is not common. You really should stay overnight though, as complications can occur, though rarely.
Hospitals have their set fees and it really depends on where you are having the surgery. The more exclusive the hospital, the more it will cost.
Hope that helps.