Jamieson, Fausset and Brown on 2 Chronicles 25:6

6. He hired also an hundred thousand mighty men of valour ... for an hundred talents of silver--This sum was paid into the treasury of Jehoahaz--not given as bounty to the mercenaries who were obliged to serve at the sovereign's call; their remuneration consisting only in the booty they might obtain. It was about £50,000 sterling, being 10s. per man, including officers--a very paltry pay, compared with the bounty given for a soldier in this country. But it must be remembered that in ancient times campaigns were short and the hazards of the service comparatively small.