Orozco Enterprises makes a variety of products that it sells to other businesses. The company's activitybased costing system has four activity cost pools for assigning costs to products and customers. Details concerning that activity-based costing system are listed below: The cost of serving customers, $1,793.00 per customer, is the cost of serving a customer for one year. Ellyson Corporation buys only one of the company's products. The details of last year's purchases of this product are listed below: Direct labor-hour requirement 0.25 DLHs per unit Required: What is the customer margin on sales to Ellyson Corporation for the year