I've paid full admission a few times last year in between my employment and getting my pass. To someone who has been at the park several years it's no big deal when you realize how many the park has to pay, maintenance on each ride, what little theming we have, contracts the park has, ride/attraction development...it's okay to pay the higher price. To the general public it seems a bit steep and that is understandable especially if they have a family of 4 or whatever the situation is. This is why I always encourage people to buy season passes, even if they visit twice a year. My first pass was $70 and this was the first pass I have ever owned. Two trips would have paid it off. Now, I upgraded to the Plat. Pass but I've already got my money's worth on it.
So yeah, I understand why the price has been raised. Inflation and all admission prices that head toward park costs. Like someone said before other parks are raising their admission prices too. It's not just Kings Island. We're living in a time when we have to really watch our money if someone can't afford a trip to KI this summer they have several options. They can save up for a trip, get a pass (if they plan on attending multiple times), getting cheaper tickets (at Kroger, etc.), or ultimately not visit (which stinks).