This is part of an interview between the music magazine Rolling Stone and Lars Ulrich, drummer for metal band Metallica. The subject is about the Napster issue from 2000:
RS: Nearly 15 years later, as the music industry continues to stumble, you were right about Napster.
LU: That and a quarter will get you on the bus, as they say.
What does Ulrich's reply mean?
Top answer
It means that what RS said is worthless, valueless. You are a genius. That and a dollar will buy you a bag of M & Ms.
— Englishmaven
It means that what RS said is worthless, valueless.
You are a genius.
That and a dollar will buy you a bag of M & Ms.
(The M&Ms cost about a dollar.
) Ulrich is saying that his opinion on Napster didn't cause any change.
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It means that what RS said is worthless, valueless.
You are a genius. That and a dollar will buy you a bag of M & Ms. (The M&Ms cost about a dollar. What you said adds no more value to the situation.)
Ulrich is saying that his opinion on Napster didn't cause any change. No one paid any attention to what he said. It would be the same if he had never said it.