What does 2 Samuel 18:11 mean?

And Joab said unto the man that told him, And, behold, thou sawest it, and why didst thou not smite him there to the ground? and I would have given thee ten pieces of silver, and a girdle.

And Joab said unto the man that told him, And, behold, thou sawest him, and why didst thou not smite him there to the ground? and I would have given thee ten shekels of silver, and a girdle.

And Joab said unto the man that told him, And, behold, thou sawest it, and why didst thou not smite him there to the ground? and I would have given thee ten pieces of silver, and a girdle.

And Joab said to the man who had given him the news, If you saw this, why did you not put your sword through him, and I would have given you ten bits of silver and a band for your robe?

And Joab saith to the man who is declaring <FI>it<Fi> to him, `And lo, thou hast seen--and wherefore didst thou not smite him there to the earth--and on me to give to thee ten silverlings and one girdle?'

And Joab said to the man that told him: If thou sawest him, why didst thou not stab him to the ground, and I would have given thee ten sicles of silver, and a belt?

And Joab said to the man that told him, And behold, thou sawest [him], and why didst thou not smite him there to the ground? and I would have given thee ten silver pieces and a girdle.