Genesis 23:9

the cave of Machpelah Machpelah is not the name of the cave, but of the locality; cf. 17, Genesis 49:30; Genesis 50:12. The old explanation that the cave was so called, because it was "a double cave," has therefore been questioned; but the LXX and the Lat. both render Machpelah as if it were the equivalent of "double," LXX τὸ σπήλαιον τὸ διπλοῦν, Vulg. speluncam duplicem. The name in the Hebrew always has the article, as an appellative or descriptive noun. The tradition of the cave being a double one is continuously maintained. Its correctness is indisputable.

in the end of his field Abraham here only asks for the cave at one end of the field of Machpelah.

for the full price Lit. "for full silver"; cf. 1 Chronicles 21:22. The payment was to be full value and in good money. See note on Genesis 23:16. The expression is one which was also current in the Assyrian language.