Do not focus solely on the initial purchase price; calculate the Total Cost of Ownership (TCO). A machine priced 20% higher may offer 30% higher energy efficiency and a lower scrap rate, leading to a faster ROI. Evaluate the availability and cost of consumables (blades, sensors) and the expected lifespan of the main motor (ideally >10,000 hours). Requesting a video trial run with your specific plastic material (PE, PP, PVC, etc.) is crucial to verify that the machine meets your throughput requirements before payment.