Is the $5,000,000 CAT 797F too expensive?

The Caterpillar 797 is a series of off-highway, ultra class, two-axle, mechanical powertrain haul trucks developed and manufactured in the United States by Caterpillar Inc. specifically for high production mining and heavy-duty construction applications world-wide. In production since 1998, the 797 series represents Caterpillar’s largest, highest capacity haul trucks.

http://www.engineeringnetwork.com