Suppose you are in the market for a used treadmill and find a Nordic Track Commercial 2150 on sale for $1000. If you knew the motor was in good condition, you would be willing to pay $1,400. Meanwhile, if you knew the motor was only in fair condition, you would only be willing to pay $400 for the treadmill. Explain the circumstances under which you would be willing to purchase the treadmill for $900