'Price' in the Bible

Then David said to Ornan, “Give me the site of this threshing floor, so that I may build an altar on it to the Lord. You shall charge me the full price for it, so that the plague may be averted from the people.”

But King David said to Ornan, “No, I will certainly pay the full price; for I will not take what is yours for the Lord, nor offer a burnt offering which costs me nothing.”