I rang the dentist and asked how much for a tooth extraction.
£70 he said.
I said. That's expensive. what if you do it without anesthetic. He said. That'll be awfully painful, but then it will cost £45.
I said. still expensive. what about if one of your students do it.
He said. They have no experience and this could be very dangerous, but they need experience, so I could then charge you just £30.
great. I said. can I book the wife an appointment for tomorrow