protected function _getShippingAvailableForPayment($sShipSet)
    {
        $oDatabase = $this->_getContainer()->getDatabase();

        $sSql = "SELECT OXOBJECTID
            FROM oxobject2payment
            WHERE OXOBJECTID = {$oDatabase->quote($sShipSet)}
                AND OXPAYMENTID = {$oDatabase->quote('bestitamazon')}
                AND OXTYPE = 'oxdelset'
                AND OXTYPE = 'oxdelset' LIMIT 1";

        $sShippingId = $oDatabase->getOne($sSql);
        return ($sShippingId) ? true : false;
    }