Professional pianos are high spec, high build quality and are reflected in the cost.These pianos are for the professional pianist who demand a lot from the instrument and the instrument will stand up to high use. They are also for the decerning pianist who requires refinement and longevity. These pianos will sometimes outlast their owners, their owners children, to be rebuilt and played again for more years. Most of the cost is in the preparation and attention to detail. These pianos are very labour intensive and the end result is a hand built piano and not a mass produced piano worked on by a large production line staff.