What is the problem with the woman’s watch?

W: Excuse me. My watch stopped running and I’m not sure what’s wrong with it.
M: Well, let me look at it.
W: OK. It’s a new watch. I’ve only had it for about a year.
M: Hmmm, it seems that it just needs a new battery. They only last about a year, you know.
W: Oh. That’s a relief. I was hoping it wouldn’t be broken or something. In fact, last week I got some water on it and I was afraid that the water might have ruined it. How much is a new battery?
M: It’s six ninety-nine plus tax for a battery.
W: Oh dear, that seems like a lot. I thought my friend said she paid about three ninety-nine plus tax for a battery.
M: Well, she may have. But we are a watch-repair shop and we install your battery and then guarantee it for a year.  If you have the watch cleaned here, we guarantee it for an additional three months.
W: Well, I guess you get what you pay for. I’ll get my battery here. How long will it take to put it in?
M: Usually I can do it right away, but right now I’m way behind in my repair of a large shipment of watches. They all need to be fixed by this afternoon. Can you leave your watch here until about 5:00 p. m. ?
W: Oh dear, I’m afraid I can’t. I need to get back to work and I have to work this evening, so I couldn’t pick it up by five. And I have to have it by tomorrow.
M: Well, then maybe I can just squeeze it in now. It’ll only take a few minutes. Can you wait?
W: Oh, I’d really appreciate that. Sure, I’ll wait.
M: OK. Just sit down over there. I’ll have it fixed in a few minutes.
W: Thanks a lot.