add_filter('woocommerce_product_get_price', 'adjust_price_by_user_location', 10, 2); function adjust_price_by_user_location($price, $product) { $user_country = WC()->customer->get_billing_country(); if ($user_country == 'US') { $price = $price * 1.1; // 10% Aufschlag für US-Kunden } return $price; }