Keep in mind that there are many types of sea bass you can use for this recipe. Chilean Sea Bass is a popular fish, because it tastes great and is easy to cook. With a high demand has come periods of over-fishing, driving up prices even higher. This is also a fish often seen on the menu in fine dining establishments.  One of the biggest reasons for the price tag is because of the way it must be caught. It’s a deep-sea fish. Fishermen have to venture way out into the ocean and use special equipment. This requires more skills, fuel for their boats, and ice/cooling options to keep fish from spoiling on the way back to shore. On top of that, the further you are from the southern part of South America, the higher the refrigerated shipping costs are.