Free is the new expensive

 I know people who constantly try to "sell" their free courses.

It is free. You should come.

Is it really free?

The person I know will brag about how many attendances he has, but he will also lose my time.

When I was younger, I wouldn't mind to do random activities. At the moment, I prefer to invest my time, rather than spend it.

Free is the new expensive! Be very careful when someone offered you something for free!