The summit is free if you take the time to watch the items listed each day , and you have them available for 24 hours . Then those lectures will clear and the next days lectures will come on . But if you pay $79 you essentially purchase and can keep all the lectures forever. And that also gives you freedom of not having to sit for hours in one day, over several days to listen to all of them. With a purchase you can listen at your leisure. Hope that helps!!