The price of a jet plane toy is primarily driven by its power system and material composition. For entry-level static models, look for high-quality ABS plastic which offers durability at a lower cost. For remote-controlled (RC) jets, the inclusion of brushless motors and Electronic Speed Controllers (ESC) will significantly increase the price but provide superior performance. Additionally, the battery capacity (mAh) and the presence of multi-channel transmitters (2.4GHz) are critical factors that justify higher price points for professional-grade toys.