To help customers understand how much they’re saving, you can show both the sale price and the regular price right in the WooCommerce cart. Here’s how to implement this using a filter. Step 1: Open the functions.php file of your current theme. Step 2: Add this PHP code snippet:

// Display regular and sale price in cart
function modify_cart_item_price($product_price, $cart_item, $cart_item_key) {
    $product = $cart_item['data'];

    if ($product->is_on_sale()) {
        $regular_price = wc_price($product->get_regular_price());
        $sale_price = wc_price($product->get_price());

        $product_price = '<del>' . $regular_price . '</del> <ins>' . $sale_price . '</ins>';
    }

    return $product_price;
}
add_filter('woocommerce_cart_item_price', 'modify_cart_item_price', 10, 3);

Once added, WooCommerce will render a crossed-out original price followed by the sale price for every discounted item in the cart. This helps improve user experience by visually emphasizing discounts. Make sure it blends well with your theme’s design, especially if using a custom cart layout.