Mocks and Ethics

What do you think the odds are of any questions showing up on the real exam that closely resemble the paid-for mock and sample exams through CFA? I would think the odds would be low because otherwise there would be a considerable advantage to those that paid for the exams. If the exams were all provided free, I could see an argument where all applicants had an equal opportunity to take the mocks, but when you add $ to the mix, it raises a bunch of other ethical questions. Thoughts?

Might show up