Taz Burnaby Inc. currently has a cash sales only policy. Under this policy, you sell 290 units a month at a price of $160 a unit. Your variable cost per unit is $104 and your carrying cost per unit is $2.70. The monthly interest rate is 1.1 percent. You think that you can increase your sales to 350 units a month if you institute a net 30 credit policy. What is the net present value of the switch using the one-shot approach