Money burns a hole in your pocket.
You spend your money too quickly.
All that glitters (is not gold).
Don't judge something by its appearance. It may look like it's worth a lot of money but it might actually be quite cheap.
Money talks.
People who are rich have more power and influence than people who are poor.
Don't count your chickens (before they hatch).
You shouldn't spend money (or make plans) based on what you expect to have (or happen) in the future.
Where there's muck (there's brass).
You can earn a lot of money if you don't mind getting a bit dirty.