The Blue Book value for an outboard motor is available in an ABOS guide or by checking the value on the Nadaguides website. The Blue Book value varies depending on the make, model and condition of the outboard motor.
ABOS Marine Blue Book offers the option to purchase a print guide, a CD, a data extract or online access to determine the outboard motor's value. Nadaguides is free to use. The values are organized by categories of marine watercraft and outboard motors, and are separated by zip code. Select the "Outboard Motors" category and the manufacturer, make and model of the motor. The site displays the retail price and the low and high list prices for the outboard motor.