The Tanakh, the Talmud and the midrashim are full of references to the cost of things. But can comparisons be made, or was there an inflation factor that devalued the currencies?

The Tanakh, the Talmud and the midrashim are full of references to the cost of things. But can comparisons be made, or was there an inflation factor that devalued the currencies?

Consider:

-Abraham pays 400 shekels for the cave of Machpelah.

-King David pays only one-eighth of that, fifty shekels, to buy a site on which to build the Temple. [2 Samuel 24:24-25].

-And the prophet Jeremiah pays only 17 shekels of silver for an entire field. [Jer. 32:9]

-And King Omri pays only 6,000 shekels for the entire territory of Samaria. [1 Kings 16:24]

Are these prices comparable in any way?