In general, the smaller the capacity, the lower the cost of carbonization. However, besides capacity, the cost of biochar making is also closely related to equipment types, design, configuration, etc. So it is usually not fixed. As a reliable biochar equipment manufacturer, we will provide you with customized design according to your budget for charcoal production. In addition, you can buy carbonization equipment from us at a factory price. Therefore, it must be an economical price.