Onehundredfold what was left behind, and eternal life, that's. That's one mighty big pearl.! What would the family think of such a sales pitch? How would the family react when a significant decision has been made about the family fortune, without having been consulted? They would most certainly feel unloved (hated), and would resent the thing/one that caused such unthinking behaviour.
To be a disciple of Jesus, sayssuggests he, the last thing one must hold on to, is him.