Charles Ellicott Commentary Genesis 23:9

"that he may give me the cave of Machpelah, which he hath, which is in the end of his field. For the full price let him give it to me in the midst of you for a possession of a burying-place." — Genesis 23:9 (ASV)

The cave of Machpelah. That is, the double cave, probably consisting of an outer and an inner compartment. As the land around is also called “the field of Machpelah” (Genesis 49:30; Genesis 1:13), some imagine that it was the valley that was double; but more probably it took its name from the cavern. For a description of the Haram, within which the bones of Abraham and Sarah probably still lie, see Palmer, Desert of the Exodus, p. 397; Stanley, Sinai and Palestine, p. 101; and also the Appendix to his Sermons in the East.

For as much money as it is worth. In Hebrew, for full silver, rendered the full price in 1 Chronicles 21:22.

A buryingplace amongst you. This translation is quite wrong. Abraham had no wish that Sarah should be buried among the Hittites, but required that the sale should be duly attested. The Hebrew text reads: Let him give it me in the midst of you (that is, in a general assembly of the people), for a possession and a buryingplace.