Maria's Treaures has chosen to use standard costing as her costing method. Each treasure requires 4 sprinkles of pixie dust at $0.36 per sprinkle. Maria bought 4,000 sprinkles of pixie dust at $0.35 per sprinkle , and used 3000 sprinkles to produce 1000 completed treasures. What is the materials usage variance for this time period? Enter your calculation as a positive number for unfavorable or a Negative number for favorable.