When assessing the price of coal gasifiers, you must look beyond the initial quote and evaluate Gasification Efficiency (Cold Gas Efficiency), which should ideally be above 75-80%. Key technical factors include the Gasification Agent (air, oxygen, or steam), Operating Pressure (atmospheric vs. pressurized), and Coal Type Adaptability (bituminous, anthracite, or lignite). High-priced units often feature advanced refractory lining materials and automated PLC control systems that reduce long-term labor costs and improve safety.