Race buggies are usually the high end in pricing. Not only do they include high quality CNC, carbon fiber, and plastic parts, they are also lighter and the chassis better distributes the mass to maintain a low center of gravity close to the center line for optimum steering and handling. The race buggies are tweaked and tested extensively by the companies to make sure you get the most durable, and best handling buggy on the market. Usually, the buggies that are pro level have a big brother, a truggy. If you look at all pro race buggies, there is a truggy built off the same platform. The other factor that plays in to the high pricing and popularity is a well known brand name. Mugen, kyosho, x ray, associated, cen, jammin, ofna, etc are all manufacturers of pro level buggies. Almost all pro level buggies are also kits, meaning you can pick whatever radio, servos, engine, etc. you want for the buggy.