The price is primarily driven by material quality and internal components. High-end switches utilize Bayer PC (polycarbonate) for the outer shell, which is flame-retardant and UV-resistant, preventing yellowing. Internally, the use of large silver alloy contact points (typically 0.3mm thickness or higher) ensures better conductivity and a longer lifespan (up to 40,000 to 100,000 clicks). Switches with phosphor bronze current-carrying parts are more expensive but offer superior elasticity and fatigue resistance compared to standard brass.