A manufacturing company that produces trivets has established the following standards for the current year: Standard price per pound $3.00 Standard material usage per trivet 2.00 During April, the company purchased 10,000 pounds of material for $33,000 and used 9,400 pounds to produce 4,500 trivets. Four thousand trivets were sold during April. What amount should be reported as the materials' quantity (usage) variance?