Get your self an auto clicker and have it push all the buttons. There's 6 above prestige. I used one that would click 1/milisecond. Hit the top button, then the one under it, then the third then the fourth, all the way down and repeat. Watch what this does when it's close to being able to prestige. Let it go till you get 10 prestige, then prestige. Let this one go till 30 or so prestige. This will take a few minutes for the first one. like 2 minutes for the second and just watch. You're doing this to learn, see what happens with the current prices.
(Most of the time, when I do this, I expect the number of times a button is actually pressed to go down over time.)