Евгений спасибо за подсказку.
В обработчике делаю:
...
/* Оформляем заказ */
$order_id = $shop->ProcessOrder($shop_id, $site_users_id, $system_of_pay_id, $order_row);
if ($order_id > 0)
{
if (!class_exists('SiteUsers'))
{
/* Класс пользователей сайта не существует, дописываем информацию о заказчике
в поле shop_order_description из текущей сессии */
if ($order_row)
{
$row_price = $shop->GetOrder($order_id);
echo '<pre>';
print_r($row_price);
Получаю
Array
(
[shop_order_id] => 151
[shop_shops_id] => 7
[shop_location_id] => 0
[shop_country_id] => 0
[shop_city_id] => 0
[shop_city_area_id] => 0
[shop_cond_of_delivery_id] => 0
[shop_order_delivery_price] => 0.00
[site_users_id] => 0
[shop_order_users_name] => fef
[shop_order_users_surname] =>
[shop_order_users_patronymic] =>
[shop_order_users_email] =>
[shop_order_users_company] =>
[shop_order_users_fax] =>
[shop_order_status_id] => 0
[shop_currency_id] => 1
[shop_system_of_pay_id] => 9
[shop_order_date_time] => 2011-03-01 16:09:00
[shop_order_status_of_pay] => 0
[shop_order_date_of_pay] => 0000-00-00 00:00:00
[shop_order_address] =>
[shop_order_index] =>
[shop_order_phone] => fefef
[shop_order_description] =>
[shop_order_system_information] =>
[shop_order_cancel] => 0
[users_id] => 0
[shop_order_account_number] => 151
[shop_order_change_status_datetime] => 2011-03-01 16:09:00
[shop_order_guid] => DD59C013-8FDB-3469-9E15-F723E1144657
[shop_order_sending_info] =>
)
Не могу понять где тут цена в этом массиве? Она в таблице у заказа 3930 рублей на странице Ваш заказ оформлен.