When analyzing the price of Zongshen tricycles, you must look beyond the surface. Key factors include engine displacement (typically 150cc to 300cc), cooling systems (air-cooled vs. water-cooled), and load capacity. A higher price often reflects a water-cooled engine which is essential for heavy-duty use in hot climates, and a reinforced chassis with leaf spring suspension for carrying loads exceeding 1,000kg. Always verify if the price includes the cargo box dimensions and tire specifications (e.g., 5.00-12 deep tread).