Wiktionary
made of money
a. Very rich.
Usage examples of "made of money".
Talking through the speaking-window, Atwater told Rosethorn impatiently that the house was not made of money and she would have to make do, as they did.
Jokubas Atwater, the mean old man who had told Rosethorn that Urda's House was not made of money, stood in the open door.
For it has occurred to me that it is a good thing to have a Royal Treasurer who is made of money.