The price of a hybrid bus is primarily driven by its powertrain architecture (Parallel, Series, or Power-split) and battery capacity. Buyers should evaluate the Energy Management System (EMS), which optimizes the switch between the internal combustion engine and the electric motor. High-value components include Lithium Iron Phosphate (LiFePO4) batteries for safety and longevity, and Permanent Magnet Synchronous Motors (PMSM) for high efficiency. Additionally, the passenger capacity (e.g., 8-meter vs. 12-meter models) and the inclusion of regenerative braking systems significantly impact the final quotation.