How much is the shirt?

M: Excuse me! How much is this shirt.
W: 50 dollars and 50% discount from today to the end of this month.

M: Didn’t I tell you? I retired on Friday.
W: Really! I didn’t think you’d be retiring for another five years or so.
M: Well. I’ll be seventy then, you know.
W: Well. I never! I thought you were still in your fifties.