Generally speaking, Coursera courses are free to audit, but if you want to access graded assignments or earn a Course Certificate, you will need to pay . This change was first announced in October 2015, and went live in January 2016.
Read moreIs signing up for Coursera free?
However, Coursera still has many courses for which even the graded assignments are completely free. You must sign up (Join for Free) with Coursera before you can see the price . Your Class Central account is not the same as an account with Coursera.
Read more