Bought with a price.  The death of Jesus on the cross was horrible.  But that alone was not what saved us.  Many people died on crosses.  Two men died on either side of Jesus and they couldn't save us.

You might say that Jesus was different because he was perfect.  True, but that only allowed him to be the perfect sacrificial lamb.  It allowed a sacrifice that was acceptable to God.

The thing that saves us is that Jesus became sin--for us.  Every wrong thing that the people of the world have done was laid on him.   And God, who cannot look upon sin, turned away from the cross.  And Jesus died.  Alone.  Because of you.  Because of me.

In Matthew 27: 46, Jesus cries "My God, my God, why have you forsaken me."

And in Isaiah 59:1-2 : "Behold, the Lord's hand is not shortened that it cannot save; neither his ear heavy, that it cannot hear; But your sins have separated between you and your God, and your sins have hid his face from you, that he will not hear."  Our sin, laid on Jesus, caused God to turn away and close His ears.

And in Isaiah 53: 6 "All we like sheep have gone astray; we have turned every one to his own way; and the Lord has laid on him the sins of us all."   We killed an innocent man.

Now that is what is meant by, "Bought with a price."