"Harga tiket teater ini terlalu mahal."

Translation: The price of this theater's ticket is too high.

[wolfe.mcbr]

Theatre ticket should ve acceptable. Theatre's ticket is unusual in English

[SpenserLem]

Yes, this is not a correct English translation.

[Noel397061]

I agree. Perhaps a better translation might be "The price of this theatre ticket is too expensive."