The price is primarily driven by the heating source (Electric, Steam, Gas, or Heat Pump), the control system, and insulation quality. Machines equipped with PLC Touch Screen Controllers allow for precise multi-stage temperature and humidity curves, which are vital for preserving the color and nutrients of sensitive fruits like berries or mangoes. Additionally, high-density rock wool insulation (at least 50mm thick) reduces heat loss, leading to lower long-term operational costs despite a higher initial purchase price.