It depends on when you are going - and the prices on allears are quite outdated...
If you are going during a prime time, like summer, the price is $30.16/adult not including tax and/or tip. If you are going at a slower time, such as the fall, the price is $25.85/adult and kids $12.92 not including tax and/or tip.
I just wanted to verify if it is $25.85/adult and $12.92/child with or without tax and tip included? The reason I ask is because when I called a couple of days ago, the lady told me that price is with tax and tip included. I repeated it to her to be certain and she yes, tax and tip is already included in that price.