Kenworth t 800 how much does it cost?

The price can vary greatly - too much to really give a ballpark figure - depending on what options, drivetrain, etc. As the T800 is sold as a road and sitework vehicle, and also can be ordered as a tractor-trailer power unit or as a vocational truck. Thus, it could come in daycab or sleeper cab configuration, you could have a single or double frame, air ride or various spring suspensions, etc.