Wagyu tomahawk steak is expensive because Wagyu beef is a high-quality, luxury meat. The cattle that produce Wagyu beef are bred for superior marbling and typically yield a much higher percentage of intramuscular fat than other breeds. This higher level of marbling results in a more tender, juicy and flavorful steak. Additionally, the extra processing and presentation of a tomahawk makes it that much more expensive. Be sue to pair it with an amazing meal.