Roddy Ricch Company manufactures high-quality cardboard boxes. The company is deciding whether to continue to make boxes or buy them from an outside supplier. The per unit production of each box is associated with the following costs: Per Unit Direct Materials $5.40 Direct Labor $5.60 Variable MOH $3.60 Variable Selling $2.60 Fixed MOH $4.00 Fixed Selling $2.20 Of the fixed manufacturing overhead, 25% is avoidable if the box is bought from an outside supplier. All fixed selling cost have already been incurred and cannot be avoided if bought from an outside supplier. What is Roddy Ricch Company's relevant cost per box produced and sold? Round your answer to the nearest cent.