When comparing prices, you must ensure the technical specs match your market requirements. Prioritize Current Rating (typically 45A for heavy-duty cookers), Voltage Compatibility (220V-250V), and Material Quality. Sockets made from Urea Formaldehyde (Bakelite) are often more expensive but offer superior heat resistance and anti-tracking properties compared to standard ABS plastic. Additionally, check for double-pole switching and neon indicators, as these features impact the unit price but are essential for safety and user convenience.