The Xu Corporation uses a periodic inventory system. The company has a beginning inventory of 1,750 units at $20 each on January 1. Xu purchases 2,000 units at $19 each in February and 950 units at $21 each in March. There were no additional purchases or sales during the remainder of the year. Xu sells 900 units during the quarter. If Xu uses the weighted average method, what is its cost of goods sold for the quarter?