Saya sangat suka lobster berduri, tetapi harganya sangat mahal.

English Translation

I am very fond of lobsters, but they are very, very expensive.

You don’t need “berduri” (being thorny; prickly; barbed; spiny) when you just say “lobster”. But the Indonesian sentence was translated from “Japanese spiny lobster” in Japanese, not directly from the English sentence.