Georgia tech MOOC edx so expensive

Hi everyone, I was looking into taking some Georgia Tech MOOCs on edX, to start building my background for OMSCS but I noticed that they’re quite expensive.

For those who took the MOOC’s, each program is around $680 at the moment. Are you paying that price or are there any alternatives? I am looking for online courses to meet the requirement. Coming from a non CS background (design).

I’m a rookie. Any suggestions or guidance would help a lot.