Make a killing

  If you say that someone has made a killing you mean that they have had great 

  financial success

  "He made a killing on the stock market."

Make a mint

  If someone makes a mint, they make a large amount of money.

  They made a mint selling hamburgers outside the football stadium.

Look/feel like a million dollars

  If you look/feel like a million dollars, you look/feel extremely good.

  "With a tan and a new hairstyle, she looked like a million dollars."

Made of money

  A person who is made of money is very rich and can buy whatever they want.

"Hey! I can't afford that much! I'm not made of money!"

Money to burn

  People who have money to burn have so much money that they can spend it on 

  anything they want.

  "She doesn't need to look for bargains - she's got money to burn!"

Money burns a hole in your pocket

  To say that money burns a hole in somebody's pocket means that they are eager 

  to spend it quickly or extravagantly.  

"As soon as she's paid she goes shopping.  Money burns a hole in her pocket!"

Money laundering

  When people launder money, they manage to conceal the source of illegally-obtained 

  money so that it is believed to be legitimate.

  "Certain countries have been accused of facilitating money laundering."

Money for jam

  A very easy way of earning money is called money for jam.

  "All you've got to do is hand out brochures.  It's money for jam!"

Money doesn't grow on trees

  To say that money doesn't grow on trees means that it is not plentiful or easily 

  obtained.

  "Be careful how you spend your money David.  It doesn't grow on trees you know!"

Money for old rope

  This expression refers to money earned from a task that requires very little effort.

  "Getting paid for watering the garden is money for old rope!"

Money spinner

  If an activity is a money spinner, it is a very successful way of making money.

  "Washing cars was quite a money spinner when I was a student."

Money talks

  This expression means that people with a lot of money have power and influence.

  "Now that he's rich he has become influential.  It's well known that money talks!"

More money than sense

  If you have more money than sense, you have a lot of money which you waste by 

  spending it in a foolish manner.

  "He celebrated the birth of the baby by buying a sports car for his wife.   

   He's got more money than sense!"

Not for love or money

  If you say that you cannot or will not do something for love or money, you mean 

  that you cannot or will not do it under any circumstances.

  "I would not try bungee jumping for love or money!"