'Price' in the Bible

Then David sent messengers to say to Ish-bosheth son of Saul, “Give me back my wife, Michal. I was engaged to her for the price of 100 Philistine foreskins.”

The king answered Araunah, “No, I insist on buying it from you for a price, for I will not offer to the Lord my God burnt offerings that cost me nothing.” David bought the threshing floor and the oxen for 20 ounces of silver.