Is it worth to enroll in the Ultimate Certified Kubernetes Application Developer (CKAD) Mock Exam Series?

Is it worth to enroll in the Ultimate Certified Kubernetes Application Developer (CKAD) Mock Exam Series? can anyone who has gone through it and cleared exam could share some inputs that would be helpfull

Ultimate Certified Kubernetes Application Developer (CKAD) Mock Exam Series

I used the CKA version when I renewed my CKA last year, and found it pretty handy. It’s harder than the regular course (closer to the killer.sh exams in difficulty), and it gives you lots of practice solving problems and increasing your speed, all very handy for doing well in the exams.

Do we have the solutions to this mock questions?

When you finish a run of the exam, the End the Exam page has solutions for any problem that you missed.