One of the main reasons why robotic sex dolls are expensive is the advanced technology built into each model. Designed with artificial intelligence (AI), these dolls can mimic human responses, such as facial expressions, voice, and even personalized interactions. Integrating these features requires complex software, sensors, and hardware, which all increase the price of the doll. With AI features that allow users to customize responses and "personalities," robotic sex dolls offer an immersive experience that traditional silicone sex dolls can't match.