$100 is a $100

Every year Maurice and his wife Esther visit the country fair Maurice says, “Esther, I’d like to fly in that helicopter.”
Esther always replies, “I know, Maurice, but the ride costs $100, and $100 is $100.”
One year Maurice pleads, “Esther, I’m 85. This might be my last chance.”
“Maurice, the helicopter is $100, and $100 is $100.”
The pilot overhears and makes them an offer. “I’ll take both of you up, and I won’t charge you a thing if you say nothing. One word, and it’s $100.”
They agree. The pilot pulls lots of fancy moves, but not a word is spoken. When they land, the pilot says to Maurice, “I tried everything to make you yell out.”
Maurice smiles and says, “Actually, I nearly said something when Esther fell out, but you know, $100 is $100.”