'Value' in the Bible

that he may sell to me the cave of Machpelah which {belongs to him}, which [is] at the end of his field. At full value let him sell [it] to me in your midst as {a burial site}."

My lord, give ear to me: the value of the land is four hundred shekels; what is that between me and you? so put your dead to rest there.

Then he took jewels of silver and jewels of gold and fair robes and gave them to Rebekah: and he gave things of value to her mother and her brother.