Kelley Blue Book

Kelley Blue Book is a website providing pricing and valuation information for new and used vehicles. Buyers use it to check fair prices before purchasing, sellers and trade-in customers use it to estimate what a vehicle is worth, and the site also carries listings and reviews to support each stage of the car-buying process.

Based in the United States, the site sits within the automotive category, functioning as a reference point for vehicle pricing across the country, used at multiple stages of buying, selling or trading in a car, from initial research to a final deal.