It might be a training cum brokerage firm. So it earns money from the training fee and brokerage commission. It’s like you trade your own money and at the same time you’re paying them training fee… I bet their training material is shallow too… Don’t take my word for it though… perhaps I’m just being sceptical… Are you actually going to trade your own money or the company’s money (like you mentioned previously) ?
its not any of the above mentioned firms … they give you trading training and then take you live with $20,000 capital ( which is theirs ) … another thing that the manager mentioned was that if for some reason you are not satisfied with the training you can get 60% refund ! Got an unpaid intern offer for a wall street firm. Don’t we love the job market right now! Have no idea what should i do … with zero experience … nobody is willing to hire me ! 
For me, I’d choose 2nd choice… it’s your decision in the end…