Ten thousand talents of silver. — This would be about two and a half millions sterling, being indeed more than two-thirds of the whole annual revenue of the Empire (Herod. iii. 95). Haman may have been a man of excessive wealth (like the Pythius who offered Xerxes four millions of gold darics (Herod. vii. 28), or he probably may have hoped to draw the money from the spoils of the Jews.
Related Commentaries of Esther 3:9
9 If it please the king, let it be written that they may be destroyed: and I will pay ten thousand talents of silver to the hands of those that have the charge of the business, to bring it into the king's treasuries.