The Tie Shoppe paid $6201.92 for a shipment of 500 ties and wants to make a profit of 30% of the cost on the whole shipment. The store is having two special sales. At the first sale, it plans to sell 100 ties for $10.00 each, and at the second sale, it plans to sell 150 ties for $10.50 each. What should be the selling price of the other 250 ties for the Tie Shoppe to make a 30% profit on the whole shipment?