The primary cost drivers are diameter, length, and tip processing. Standard diameters range from 2.5mm to 5.0mm, with thicker sticks commanding higher prices due to material volume. Pointed vs. blunt ends also affect the cost; double-pointed sticks or those with specialized 'paddle' handles (Teppo Gushi) involve more complex manufacturing steps. Additionally, moisture content must be kept below 10-12% to prevent warping and weight fluctuations during shipping, which can affect your final landed cost.