Black Book’s Official Medium and Heavy Duty Truck and Trailer Guide contains more than 3,800 vehicles including Class 4 through Class 8 trucks, tractors, straight trucks, and trailers used in the commercial trucking and transporting industry. It includes wholesale value adjustments for condition, optional equipment, and specific configurations as well as suggested retail and Finance Advance values. It also features values for eleven types of trailers. The guide is published monthly, ensuring customers have access to the most current market values available. Special Product Features: • Wholesale average and rough values • Retail average and Finance Advance values • Value adjustments for mileage • Value adjustments for optional equipment • VIN model number • Cab configuration and cab-to-axle range • Engine type with horsepower range • GVW and/or GCW ranges • Options included in the vehicle price • Eleven types of trailer values With Black Book, you’ll always have today’s value. Subscription Details: By purchasing this product you have subscribed to a one month subscription for $19.99 that auto renews each month for the same price. This subscription equates to a $239.88 annual expense if you choose not to turn off the auto-renewal under your user Account Settings. Payment will be charged to your iTunes account upon confirmation of purchase by you each month. If you choose not to purchase for a given month then you can still use the product, but the vehicle values displayed will be from the publish date of your last purchase. No cancellation of the current subscription is allowed during active subscription period.