Is taking AWS cloud practioner essentials on coursera worth it? Or a waste of time and money?

Depends on what role you are in and future plans. Cloud practioner is a basic introductory course, next level course will give more knowledge. See more

No course is a waste of time. If you are planning for certification refer to some other courses also from udemy as well as official videos. Also better apply for financial aid in coursera rather than buying it. Hope it helps See more