'Shekels of Silver' in the Bible

And Joab said unto the man that told him, And, behold, you saw him, and why did you not strike him there to the ground? and I would have given you ten shekels of silver, and a belt.

And the man said unto Joab, Though I should receive a thousand shekels of silver in my hand, yet would I not put forth my hand against the king's son: for in our hearing the king charged you and Abishai and Ittai, saying, Beware that none touch the young man Absalom.

And the king said unto Araunah, Nay; but I will surely buy it from you at a price: neither will I offer burnt offerings unto the LORD my God of that which does cost me nothing. So David bought the threshing floor and the oxen for fifty shekels of silver.