Can’t remember, and for some reason the price doesn’t say in my old mails. Maybe 10-20USD per session?
I tried maybe 5 different tutors before I settled for one.
She was based in Hong Kong (which I believe she still is) and comes from central France. She was doing italki as a side gig teaching French in HK during days.
In US dollars, a professional French teacher on iTalki will typically cost $20-$30 per hour.
You can reduce the price by going with "community tutors" instead. The price is lower, but they typically aren't professional teachers, so you're effectively paying for a conversation partner rather than actual lessons.
The region the teacher comes from is also a factor, due to cost of living differences. So the price can vary from language to language and dialect to dialect.