Wisdom Teeth

One day, a man walks into a dentists office and asks how much it will cost to extract wisdom teeth.
“Eighty dollars”, says the dentist.
“That’s a ridiculous amount!” the man says. “Isn’t there a cheaper way?”
“Well…” the dentist says, “if you don’t use an aesthetic, I can knock the price down to $60.”
Looking annoyed the man says, “That’s still too expensive!”
“Okay” says the dentist. “If I save on anesthetics and simply rip the teeth out with a pair of pliers, I can knock the price down to $20.”
“Nope,” moans the man, “it’s still too much!”
“Well” says the dentist, scratching his head, “if I let one of my students do it, I suppose I can knock the price down to $10.”
“Marvelous!” says the man, “Book my wife for next Tuesday.”