This usually works to reveal low-ballers and this is how I flip it back onto the interviewer:
Hiring person: “So what is your anticipated pay for this position?”
Me: “If selected for this position and made an offer, I will trust that an offer will be made in good faith, taking my skills and experience into consideration. I will know based on an offer whether it will be a good fit for me.”
Hiring person: “But we need to list a concrete figure here, so like if you had to put a number to that answer, what would it be?”
Me: “Since I don't know the way your organization determines the pay scale, I wouldn't have a concrete number to give you. But I'm sure the range is available internally and I would say an amount within that range that reflects my skills and experience. Did you have any additional questions about my skills or experience that would help clarify that?”