Left Eye Promotions is a specialty retailer offering T-shirts, sweatshirts, and caps. Its most recent annual sales consisted of $30,000 of T-shirts, $18,000 of sweatshirts, and $4,500 of caps. The company is adding polo shirts to the lineup and projects that this addition will result in sales next year of $28,000 of T-shirts, $16,000 of sweatshirts, $14,000 of Polo shirts, and $3,750 of caps. What sales amount should be used when evaluating the Polo shirt project?