Tolton, Inc. is just shy of hitting its operating income target. The manager, K.T. Tolton, decides to purchase inferior materials right before year end. The standard price for the materials is $13.00 per pound. K.T. buys 4,000 pounds of inferior product at $10.46 per pound. What is the effect on net income for the year? Please sign an increase as a positive number (e.g. 100) and a decrease as a negative number (e.g. -100).