Mariano Corporation sells 10,000 units of inventory during the first year of operations for $500 each. The selling price includes a one-year warranty on parts. It is estimated that 3% of the units will be defective and that repair costs are estimated to be $50 per unit. In the year of sale, warranty contracts are honored on 80 units for a total cost of $4,000. What amount will be reported as Estimated Warranty Liability at the end of the year?