A customer returns a clock radio to the store because it doesn't work

— Hi. I bought this clock radio here, but the alarm doesn't work. I need to get it fixed. Here's the receipt.
— We can fix it for you. Hmm, looks like the timing button is stuck. That'll run about $15.
— Fifteen dollars?! But I thought you said you'd fix it for free.
— We do while it's under warranty. But this warranty was for 14 days. I'm afraid it's run out.