Jesus told him to keep the commandments. Outwardly, to human eyes, he had. Give the money to the poor, and you will have treasure in heaven. Stuffitis' owned this young man's heart. An example to emulate is found in Mark.
Many rich people put in large amounts.
A poor widow dropped in two small coins, worth less than a cent. All of them have given what they could spare. Please pray with me. See if there is any offensive way in me, and lead me in the way everlasting. For Jesus' sake.