How much does it cost from London to Edinburgh by coach?

M: Good morning, Madam. Can I help you?
W: Eh... Yes, I hope so. I want to go to Edinburgh for the festival, and I’m not too sure of the best way to get there. I’ve got a car, but it’s not in a very good condition. And I was just wondering if you could tell me how long you think it’ll take me to drive up there.
M: Well, if you go there on the motorway, I suppose it’s about 8 hours.
W: 8 hours, It’s a long way. And considering the patrol prices, it’ll be a little too expensive, I suppose.
M: Well, yes, it probably costs you about 70 pounds depending on your car.
W: The car is the trouble. Now, what about the coach? I’ve been told that’s fairly reasonable.
M: Oh, it is. It costs twenty pounds in fact from London to Edinburgh.
W: Hmm, that’s not too bad.
M: But it takes about ten hours.
W: Oh, no. What about the train then?
M: Let me see. It takes five hours ill fact from London to Edinburgh. It costs 62 pounds for a single.
W: 62 pounds for a single ticket. Wow, that’s a lot of money. You see, what I’d really like to do is to go by plane. Can you tell me about that?
M: Yes, of course. Let me see, 78 pounds for a single. But it takes just over an hour.
W: Really?
M: Yes, you’re there in no time.
W: Wonderful. That’ll be a wonderful start to the holiday.
M: Shall I book a ticket?
W: Well, look. I really ought to think about it. Thank you very much for your help. See you later.
M: See you.