A company's detailed inventory record for the month of March is as follows: Date Description Units Cost per Unit Total Cost March 1 Beg. Inv. 90 $20 $ 1,800 March 4 Purchase 120 $25 $ 3,000 March 10 Sales (150) March 15 Purchase 100 $26 $ 2,600 March 25 Sales (130). 

Question: Using the perpetual weighted-average method, what should be the total cost of its ending inventory at the end of March?