Patton Corp. currently has an all-cash credit policy. It is considering making a change in the credit policy by going to terms of net 30 days. The required return is .64 percent per month.

	Current Policy			New Policy
Price per unit	$	165		$	168
Cost per unit	$	131		$	134
Unit sales per month		1,260			1,290

Calculate the NPV of the decision to change credit policies. (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)