James Canter of Auburn, Alabama, is a good shopper. He always compares shops and uses coupons every week. James figures he saves at least $50 a month as a result. Assuming an interest rate of 5 percent, what is the future value of this amount over ten years? Round your answer to the nearest cent. (Hint: Use Appendix A-3.) Round Future Value of a Series of Equal Amounts in intermediate calculations to four decimal places.