Ask HN: What is your CS tutor salary?

I’m wondering how much the best online tutors for CS/software can make. Looking through Wyzant, I see people charging $200/hour, with one Google engineer charging $500/hour. If you have credentials from top companies and top schools, is several hundred dollars per hour realistic? How much time do you have to put in to get to this point? Do you tutor via a platform, or independently?

This seems like an amazing job to do remotely, or as a side hustle while in school, etc. I feel like there must be a catch I don’t see — what is it?