As a non-pro you can get access to nearly all market day for like $20/month. As a pro you are forced to pay like $1,000+/month for the same data. And this is per username. So same trader has to pay 3,000/month if using 3 brokers. I think this is a rip-off pushed by exchange monopolies. All LLCs are auto-classified as Pro without regard to how much volume of data consumed or trades placed. Which brokers allow trading without data connection? The free/cheap data available all over is good enough for my firm as we don't trade that much.