That is correct: when someone sells the house "as is" he sells it with any known or discovered-during-inspection issues and does not have to fix them. If you have not yet entered into a contract, you can walk away from the sale; or if there is a contract, but it contains an "inspection contingency," you again can walk away if he refuses to fix--but you can't make him fix; if he willing to lose the sale, you'd have to decide whether it's worth going through with it or not.