At Dive Shop Inc, regular customers place about 3.7 orders per year. These orders average $87 in retail value, and contribution margin percent is typically 35%. Acquiring a new customer costs Dive Shop about $133, and Dive Shop also spends $31 per customer per year on contests, deals, and communications to keep them coming back. Dive Shop's retention rate is 83%, and the corporate discount rate is 11%. Calculate the net present value of 1 regular customer at Dive Shop. Rounding: penny. Remember, the answer may be negative.