A "price difference refund" link indicates that, due to various reasons (such as promotions, inventory adjustments, etc.), the actual payment amount may differ from the price displayed on the product page.
By contacting customer service, you can accurately determine the specific amount requiring a refund, avoiding accidental additional charges.
Customer service will inform you of the specific refund method, such as whether the refund can be added directly to the original order or requires a separate order.