I believe the goal of the varied pricing for the Genie + is to sell out as often as possible and maximize the profit at the same time. They lower the price on non peak days to try and sell as many as possible and on days when the parks are going to be packed and they know Genie + will sell out they jack the price up. Once the bean counters have enough data after this year to determine what the price elasticity is going forward and they can forecast with relatively certainty on what the max price people are willing to pay for
Genie+ on peak days, expect pricing to go much higher than the current $35 self imposed cap.