The executives at Aspire Foods took your recommendations and decided to develop a snack product targeted towards the active children and their parents. To keep costs down they decided to make the bars smaller and add some filler and they were able to get the retail price down to $4.00 for a box of six bars. Retailers will earn a 30% margin on this product and Aspire's cost of production is $1.50 per box of bars. What is Aspire's contribution per box of bars?