The “GDP Illusion” is a fault in perception caused by defects in the construction and interpretation of standard economic data. Its main symptom is a systematic underestimation of the real contribution of low-wage workers in the global South to global wealth, and a corresponding exaggerated measure of the domestic product of the United States and other imperialist countries. These defects and distorted perceptions spring from the neoclassical concepts of price, value, and value added which inform how GDP, trade, and productivity statistics are devised and comprehended. The result is that supposedly objective and untarnished raw data on GDP, productivity, and trade are anything but; and standard interpretations conceal at least as much as they reveal about the sources of value and profit in the global economy.