Magento don’t let you set shipping cost in product level. You can do it by flatrate shipping method
Create a attribute shipping_world and add to your default attribute set.
overwrite/extend the flatrate carrier model of magento.
The value given in shipping_world attribute of product will be the flat shipping rate of that product.

class Mage_Shipping_Model_Carrier_Flatrate
    extends Mage_Shipping_Model_Carrier_Abstract
    implements Mage_Shipping_Model_Carrier_Interface
{

    protected $_code = 'flatrate';
    protected $_isFixed = true;

    /**
     * Enter description here...
     *
     * @param Mage_Shipping_Model_Rate_Request $data
     * @return Mage_Shipping_Model_Rate_Result
     */
    public function collectRates(Mage_Shipping_Model_Rate_Request $request)
    {
        if (!$this->getConfigFlag('active')) {
            return false;
        }

        $freeBoxes = 0;
        if ($request->getAllItems()) {
            foreach ($request->getAllItems() as $item) {

                if ($item->getProduct()->isVirtual() || $item->getParentItem()) {
                    continue;
                }

                if ($item->getHasChildren() && $item->isShipSeparately()) {
                    foreach ($item->getChildren() as $child) {
                        if ($child->getFreeShipping() && !$child->getProduct()->isVirtual()) {
                            $freeBoxes += $item->getQty() * $child->getQty();
                        }
                    }
                } elseif ($item->getFreeShipping()) {
                    $freeBoxes += $item->getQty();
                }
            }
        }
        $this->setFreeBoxes($freeBoxes);

        $result = Mage::getModel('shipping/rate_result');
        if ($this->getConfigData('type') == 'O') { // per order
            $shippingPrice = $this->getConfigData('price');
        } elseif ($this->getConfigData('type') == 'I') { // per item
            $shippingPrice = ($request->getPackageQty() * $this->getConfigData('price')) - ($this->getFreeBoxes() * $this->getConfigData('price'));
        } else {
            $shippingPrice = false;
        }

        $shippingPrice = $this->getFinalPriceWithHandlingFee($shippingPrice);
		$shippingPrice = $this->get_pro_ship();

        if ($shippingPrice !== false) {
            $method = Mage::getModel('shipping/rate_result_method');

            $method->setCarrier('flatrate');
            $method->setCarrierTitle($this->getConfigData('title'));

            $method->setMethod('flatrate');
            $method->setMethodTitle($this->getConfigData('name'));

            if ($request->getFreeShipping() === true || $request->getPackageQty() == $this->getFreeBoxes()) {
                $shippingPrice = '0.00';
            }

            $method->setPrice($shippingPrice);
            $method->setCost($shippingPrice);

            $result->append($method);
        }

        return $result;
    }

    public function getAllowedMethods()
    {
        return array('flatrate'=>$this->getConfigData('name'));
    }

	public function get_pro_ship()
	{
	Mage::getSingleton('core/session', array('name'=>'frontend'));
	$session = Mage::getSingleton('checkout/session');
	$cart_items = $session->getQuote()->getAllItems();
	$_helper = Mage::helper('catalog/output');
 	$custom_ship=0;
	foreach( $cart_items as $items ){

		$cur_fproduct = Mage::getModel('catalog/product')->load($items->getProduct_id());
	$custom_ship +=($items->getQty())*($_helper->productAttribute($cur_fproduct, $cur_fproduct->getShippingWorld(), 'shipping_world'));
	}

	return $custom_ship ;	

	}// function end

}

- Posted by admin