Plutarch puts the value of the amount of purple found by Alexander at Susa at 5000 talents.
"The History of Antiquity, Vol. II (of VI)"
Max Duncker
Herodotus of Halicarnassus had seen Babylon, perhaps, and certainly good part of Syria; Ctesias had dwelt at Susa and collected notes for a history of the Persian Empire; Xenophon of Attica had tramped from the Mediterranean to the Tigris and from the Tigris to the Black Sea, and with him had marched more than ten thousand Greeks.
"The Ancient East"
D. G. Hogarth
Ctesias, who lived at Susa itself while at was the Persian capital, agrees with Herodotus that Cyrus wrested the lordship of the Medes from the native dynasty by force; but Herodotus adds that many Medes were consenting parties.
"The Ancient East"
D. G. Hogarth