Wiktionary
rich as croesus
a. (context simile English) Very wealthy.
Usage examples of "rich as croesus".
Alva's said to be rich as Croesus himself, also the best swordsman in the colony&mdash.
Orsatti, whom you're going to make as rich as Croesus, isn't that so?
Talk is that he's already rich as Croesus off his pirating and raiding, his combined landholdings in England alone are somewhat bigger than my own Kingdom of Mide, and he holds title to a county in the eastern marches of the Empire, as well.
You're rich as Croesus, so there's nothing to be gained by offering you a boat ride on the Potomac.