I don't use Ameritrade, so not sure how they work. As I understand it, first the broker must choose to subscribe and pay the fee to PBOT, then, depending on how the broker operates, they pass the cost on to the subscriber through a nominal fee, or they simply provide the data to subscribers as part of the basic fee structure. If the individual broker chooses not to subscribe, you will not be able to access the data through that broker, in which case may be time to look for a new broker.
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