If you ask people to rank say 5 things from top to bottom where the first thing at the top is what they are least cost conscious about and the one at bottom is what they are most - I would bet health would at the top slot for most of us. So relatively we would spend (whatever we have) on our health versus other things if we had conviction on the outcome.
"I want to be able to walk without pain but if it's gonna be expensive forget it!"