Seventy quid is seventy quid!

From My Laughter Club:

Stewart and his wife Barbara go to the county fair every year, 

And every year Stewart would say, "Barbara, I'd like to ride in that helicopter"

Barbara always replied, 

"I know Stewart, but that helicopter ride is seventy quid, and seventy quid is seventy quid!"

One year later Stewart and Barbara went to the fair, and Stewart said, "Barbara, I'm 75 years old. If I don't ride that helicopter, I might never get another chance"

To this, Barbara replied, 

"Stewart, that helicopter ride is seventy quid, and seventy quid is seventy quid" 

The pilot overheard the couple and said, "Folks I'll make you a deal. I'll take the both of you for a ride. If you can stay quiet for the entire ride and don't say a word I won't charge you a penny! But if you say one word it's seventy quid. "

Stewart and Barbara agreed and up they went. 

The pilot did all kinds of fancy manoeuvres, but not a word was heard. 

He did his daredevil tricks over and over again, 

But still not a word... 

When they landed, the pilot turned to Stewart and said, "By golly, I did everything I could to get you to yell out, but you didn't. 
I'm impressed!"

Stewart replied, "Well, to tell you the truth I almost said something when Barbara fell out, 

But you know, seventy quid is seventy quid!"