Understanding the Difference Between Ser and Estar in Spanish

Normally we use ser to talk about permanent qualities of a person. In this case "es muy caro" would mean that it always has a very high price. On the other hand, we use estar to talk about temporary states. "Esta más barato" would mean that the price might change in the future, for example, it could go up in two months' time.

Example:

- El aceite de girasol es más barato que el de oliva. (Sunflower oil is cheaper than olive oil.)
- En el Super Express es muy caro. (At Super Express, it is very expensive.)