Spanish Chunks

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Costar un mundo

To cost the earth / To be very difficult

Idioms & Sayings
Notes & Usage:

Can mean something is very expensive or that it requires enormous effort. Context makes the meaning clear.

See It in Context

Ese restaurante cuesta un mundo, pero vale la pena.

That restaurant costs the earth, but it's worth it.

Le costó un mundo admitir que estaba equivocado.

It took enormous effort for him to admit he was wrong.

—¿Fue difícil? —Me costó un mundo, pero lo conseguí.

—Was it hard? —It cost me the earth, but I managed it.