The Best Modeling Agencies in Boston for Teens?

HI, I am 12 year old girl and would like to know the best modeling agencies for teens in Boson. I have already tried Dynasty and Cameo. and i dont want to pay over $1,000 just to fill up my portfolio. I want a modeling agencie where you dont have to at all pay for anything. I accually want to get paid! Thank you if you can tell me! :)