The Mary Company primarily sells dishes, and recently purchased a cardboard box company. Mary's new cardboard box division has no excess capacity and sells 30,000 boxes to outside customers. The variable cost of each box is $1.50 and usually has a contribution margin of $0.80 per box. Management of Mary's dish division has decided it would like the box division to provide it with boxes. What is the minimum transfer price the box division should find as acceptable