I paid $25/hr for an ASL tutor in Washington DC. I found it to be a lot worse than taking a community college class. My tutor was Deaf, but didn't have a lot of teaching experience. She wasn't very good at steering the convos into new vocabulary ("Tell me about what you did last week" involved a lot of repetition). And she was much better at helping me pick up vocab (which I was decent at on my own) than grammar/expression. I ended up stopping the lessons and looking for a better option.