What is the telephone call about?

M: Good morning. I’m phoning to enquire about your office shelving system.., code number SS007.
   W: Oh yes, what would you like to know?
   M: Well, I’d like to check on the dimensions first make sure that they’ll fit. First of all, how wide are they?
   W: Just a moment sir, I’ll get the specifications.., you asked about the width.., yes, the standard unit is 3.5 meters wide.
   M: And the height?
   W: They’re 2 meters high with flexible positions for the shelves.
   M: How many shelves can actually be fitted?
   W: Really as many as you like, but normally five.
   M: I see. I need to know how much they stick out - in other words, how deep are they?
   W: They’re 30 centimeters deep.
   M: Thanks, that’s the dimensions. Now, what about delivery?
   W: Well, it depends on how far you are from our warehouse.
   M: We’re about 10 miles from the centre.
   W: I see-Well, that’ s in our free delivery area, so there’ll be no extra charge for delivery.
   M: Good. Actually, what I meant was how long does it take after I place an order?
   W: I see. We guarantee delivery within two weeks.
   M: Good. Well, we’ re interested in ten of your standard units for a suite of offices. How much do you charge?
   W: Well, the unit cost is ￡ 98 but in view of the size of the order, we can offer a 5 percent discount ... just a moment, I’ll just do the figures.., yes, that comes to ￡ 931 -let’s round it off and call it ￡ 930.
   M: That sounds reasonable. Finally, what sort of guarantee do you offer?
   W: Well, these units are extremely sturdy and reliable. There’s the usual one-year guarantee but they have an average life of at least 20 years...