Matthew Poole and continuators on 2 Samuel 14:26

26 And when he polled his head, (for it was at every years end that he polled it: because the hair was heavy on him, therefore he polled it) he weighed the hair of his head at two hundred shekels , after the kings weight.

Whereas ordinarily the hair of a Manss head which grows in a years space, comes not to half so much. But some Mens hair grows much faster, and is much heavier than others. But others understand this not of the weight, but of the price of his hair, which was sold by him that Polled it at that rate.

Marginal references: Heb. stone.