A single screw extruder is generally cheaper than a twin screw extruder in terms of initial investment. Its simpler design, fewer components, and easier maintenance make it a more cost-effective option for many extrusion applications. A twin screw extruder usually has a higher purchase price because it has two screws, a more complex drive system, and a more advanced processing design. https://uniqueextrusion.com/twin-screw-vs-single-screw-extruder/