quick / fast buck

What is the origin of the idiom "quick buck" and when to use it?

The origin of the idiom "quick buck" can be traced back to the early 20th century in the United States. It became popular during the rapid industrialization and economic growth of the early 1900s, when people were seeking opportunities to take advantage of the growing markets and make a profit in a short amount of time. The phrase can be heard in various contexts, such as discussions about get-rich-quick schemes, temporary jobs, or activities that promise quick monetary rewards.