The title includes two common expressions:
Money talks = in the end money is the most important thing for many people
No kidding! = that's obvious
Learn important idioms and expressions with talk, as well as idioms and expressions with no through definition and example sentences to provide context.

Comments
“No kidding!” means “that’s obvious” only when intended sarcastically. Its base, original meaning is “I’m not lying to you.”
“Kidding” means telling an untruth, often in jest.
I agree. “No kidding” generally is a statement on the truthfullness of something expressed. If you tell me that you can bench press 400 pounds and I respond with, “No kidding”. I am checking for the validity of your statement. And yes said sarcastically it can mean something that is very obvious, usually even so an idiot could see it is true.