não custa nada

Portuguese

Literally, “it does not cost anything”.

(idiomatic) said to justify doing something that is (or would be) easy to be done, especially when one is reluctant or doubtful about doing it
Você devia visitar seus pais mais vezes. Não custa nada tentar ser parte da vida deles.
You should visit your parents more often. It does not cost anything trying to be a part of their lives.