Intern Pay for Los Angeles

Hi, I had a question regarding intern wages in Los Angeles.

So I just finished interviewing at a boutique firm in Los Angeles, they gave me a case study to complete and will hire me once I finish it. During the interview nothing came up in regards to what I will be paid throughout the duration of the interview, tbh not too sure if they even pay interns. The firm is quite small, in total about 5-6 people who work there. I'm thankful for the opportunity and honestly would intern there for free, but if they do ask me what I should be paid (assuming hourly) what are the average inten wages here in Los Angeles?

Thanks in advance!