$3.$ The Best Little Hairhouse in Tucson began the month of January with an opening inventory of $$8,600$ worth of styling product at retail. Net sales for the month totaled $$7,240,$ and the store purchased an additional $$6,800$ worth of inventory. There were employee discounts totaling $$60,$ and there was $$200$ of faulty coloring product that was returned to the vendor. What is the book value of inventory at the end of January?