Wafer cookies are generally inexpensive to manufacture and purchase due to their fundamental structural composition and mass-production efficiency. The vast majority of a wafer's volume consists of air-filled, light layers combined with low-cost foundational ingredients like wheat flour, water, sugar, and vegetable oils, which are vastly cheaper than heavy dairy, butter, or dense chocolate solids. Furthermore, automated industrial baking processes can rapidly bake large sheets of crispy wafer batter and assemble them with economical cream fillings on continuous high-speed assembly lines, keeping production costs low.