I am trying to find historical data (OTCBB, OTC PINK, NASDAQ, NYSE, ...) to use to train/test to eventually grow into a predicting AI. I think eoddata.com is great, but it is unclear. Furthermore, they have an API service with ws.eoddata.com.
Where could the information at an affordable price? Quality of service is at least as important to me as the data itself. Give me your opinion.