6. Only visit if you get a flexticket or free ticket as I do not think the on-gate price is reasonable at all.
Considering you can get an Annual pass for just $5 more than the gate price, and even if you don't take them up on that, you can nearly always get a 2nd day free, I think the price for Seaworld is very reasonable. We paid the same as we would for a 1 day pass into a Disney or Universal park and went for 1 full day and 2 evenings, and could have gone back again if our trip had been longer.
Of course, if you only watched one of the Shows, then you probably missed half of the park. Did you you skip Rock n Rollercoaster because you'd been on it before?
Bev