What price a given transport airplane will carry is largely a reflection of the manufacturer's assessment of the competitive market into which the new aircraft will be introduced. Thus its design-to-cost target is set in the marketplace. The marketplace is a great normalizer of price, and what differences in price individual customers pay for their airplane depends upon the unique options or equipment they ask to have built into the aircraft. Using the market place prices for transport aircraft, some price relations in terms of weight and thrust have been developed which show normalized prices for discrete families of transport aircraft.