The price is primarily driven by the automation level (fully automatic vs. semi-automatic), the production speed (bags per minute), and the material compatibility (e.g., PE, PP, biodegradable materials, or paper). Machines equipped with servo motor control systems and PLC touch screens (such as Siemens or Delta) command a higher price due to their precision and lower waste rates. Additionally, the type of bag produced—such as flat bags, T-shirt bags, or complex stand-up pouches with zippers—requires different mold configurations and ultrasonic welding technologies, which directly impact the final cost.