Yes its worth it. Why? Because its more practice questions. No one grades it but yourself with guideline answers. I did it for both levels one and two and they were very similar in difficulty to real exam.
You can also buy the full mock exam and do it online. I believe it’s the same as the live mock but I could be wrong. I did it for Level 2 and thought it was well done. They also had video explanations of the correct answers on the Level 2 mock which I thought was helpful. I guess the difference (assuming the exam is the same) is if you feel the need to do a mock in a live setting. $100 for the online version.
It’s the experience of real test conditions that I have found very useful for levels I &II. I’m not sure who best 3rd party provider for level III, as I’m booking a live mock in London and need to choose between Wiley, Kaplan and Fitch …
Interesting comment because I disagree with it. I’ve done it for I and II and there are concepts from qbank that are n the exam (obviously). But for level II i GUARANTEE there was no duplicate questions because the qbank is not item set for 95% of it.