They were just like your kids, and you played with them for a few hours, and when you were about to leave, the parents said, "Hey, by the way, just before you leave, if you're interested, they're for sale."
Y jugaran con ellos unas cuantas horas. Y cuando estuvieran a punto de irse, los padres les dijeran: "Por cierto, antes de que se vayan, si les interesan están a la venta".