A must go place if you ever visit Jakarta!
I've been there for I dont know how many times. It's a good place, you can find many attraction sites there. Whether u want to go playing in DuFan (the concept is like Disneyland), watching undersea world (SeaWorld), hanging around seeing various animal attraction (in 4D attraction site), or just want to have a rest enjoying the relaxing atmosphere at the beach of Jakarta, it is a nice place!
That time, I go there mainly to relieve my stress at work. Compared to other attraction places abroad, I think the ticket price is not to expensive. They will charge you for the car you drive and each person inside it. Back then, it was around 10,000 Rupiah (equal to about 1 US$) for a car and another 10,000 Rupiah for each person. Inside you can decide yourself to which attraction site do you want to go. There will charge again for the entrance ticket there (also with reasonable price I think)
Overall, its a "must go" place if you visit Jakarta!