Questions & Answers about Il concerto è molto caro.
Does caro mean "expensive" or "dear"?
Why doesn't molto change its ending here?
Is the accent mark on è really necessary?
Yes, it is crucial! The accent mark is the only thing that separates è (meaning "is") from e (meaning "and"). If you leave it off, the sentence would translate to "The concert and very expensive," which doesn't make sense.
How would this sentence change if I were talking about multiple concerts?