Practice Exams for Proven Exams

Since I last did a proven certification exam, it appears the way Practice Exam can be done has changed.

Previously, every Certification had a link to a practice exam which you could do as many times as you wished and as often as you wished.
Now it appears you need to get a Practice Exam voucher and use that to 'buy' one shot at the 'Practice Exam'.
You do the Practice Exam through PearsonVue.
If you fail, I presume you can then use another voucher to 'buy' another shot at the Practice Test.
However, if you Pass first time then it appears you cannot repeat the exam as you have already Passed.

This just seems ridiculous for a Practice Exam? You should be able to do them as many times and as often as you like regardless of failing or passing?
Am I missing something here?