Dick agreed to paint Jane's house for $4,000, inside and out. Normally, it would have cost Jane $6,500 but Dick felt sorry for her because she was a single mother with four children and not much money, so he decided to give her a good deal. When Dick had painted everything except the kitchen ceiling, Arthur asked him to go on a fishing holiday, and Dick, who was rather irresponsible, decided he had had enough painting. He left a note for Jane saying "You've had more than your money's worth with what I've done already. I'll expect your cheque for $4,000 to be at my office when I return in two or three weeks." Which of the following statements is correct