Johns Hopkins Data Science Course

I was working my way through the Data Science course series from Johns Hopkins (https://www.coursera.org/specializations/jhudatascience). I made it through the first three courses, which I was able to take for free. However, now I’m finding payment is required to sign up for additional courses. I don’t remember that being explained at the outset, is this a new policy?


Link to Full Article: Johns Hopkins Data Science Course