How much more profit you can make after you subscribe a more expensive quote package? The data providers definitely make more than what all traders make in total. I assure you that is 100% true. Why is data so expensive? Don't they belong to public domain after the exchanges give them away? The data is not only expensive but also more or less inefficient and inaccurate. There is no open standard for data format and conversion. Therefore, lots of money are wasted (and made). How about let's start a nonprofitable organization to solve these issues? We provide accurate open standard realtime data for FREE. Hey, buddy, are you going to be happy or getting upset? What do you think?