All these city/modern-day cultivation stories are like randomly meet some sick dude then miraculously heal him. Get rewarded.
I don't even dislike it because it's true and great. As a person who fully understands how many injuries or diseases people have that severely alter their lives. Wealthy dude definitely willingly give up 50% his wealth to walk again. Probably even 100, especially if you have confidence in your skill set to re-earn.
Wealth can buy many things but not everything.