The analogous line: Books, market reports, are maps. Accutrade is VIN specific navigation. That's the elevator speech, the following is some detail.  

A map costs little and could get you to the neighborhood, anybody can make one 

Navigation costs a bit more to create and maintain, but delivers you to the front door. 

Accu-trade is the transparent ignition switch to any marketplace...wholesale, retail, auction, online or in lane, More...