public function paymentFeePriceIncludesTax($store = null)
    {
        if ($this->_paymentFeePriceIncludeTax === null) {
            $this->_paymentFeePriceIncludeTax = (bool)$this->_getConfigDataCall(
                self::CONFIG_XML_PATH_PAYMENT_FEE_INCLUDES_TAX,
                $store
            );
        }

        return $this->_paymentFeePriceIncludeTax;
    }