I want to add custom price for bundle products after adding to cart. I have used "checkout_cart_product_add_after" observer to do so. But it is adding custom price to product price, not in sub total and grand total. Following is my code:

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <!-- Event for add to cart -->
    <event name="checkout_cart_product_add_after">
        <observer name="customprice_observer_set_price_for_item_add" instance="Custom\Shop\Model\Observer\SetPriceForItem"/>

Observer class:

namespace Custom\Shop\Model\Observer;

use Magento\Framework\Event\Observer;
use Magento\Framework\Event\ObserverInterface;
use Magento\Catalog\Model\Product\Type;

class SetPriceForItem implements ObserverInterface
     public function execute(Observer $observer)
        $item = $observer->getEvent()->getQuoteItem();
        if ($item->getProduct()->getTypeId() == Type::TYPE_BUNDLE) {
            foreach ($item->getQuote()->getAllItems() as $bundleitems) {
                if ($bundleitems->getProduct()->getTypeId() == Type::TYPE_BUNDLE) {
                    $bundle_price = $bundleitems->getProduct()->getFinalPrice();
                    $fee = $bundleitems->getProduct()->getBuildInFee();
                    $final_price = $bundle_price + $fee;

        return $this;

Is there anyone who can help me? Price is not adding to subtotal and grand total.

Following is the cart item, subtotal and grand total.

enter image description here

Any help???

  • is this event firing?
    – Amit Bera
    Commented Jul 26, 2017 at 17:25
  • Yes, it is firing because product price is $22.95 and I have added $40, so price price is showing $62.95
    – Aveek
    Commented Jul 27, 2017 at 5:38
  • @AmitBera do you have any idea how to overcome the problem?
    – Aveek
    Commented Jul 27, 2017 at 6:10
  • any Update on this...? Commented Nov 17, 2017 at 12:41
  • any update on this? Commented Feb 21, 2018 at 8:55

1 Answer 1


I had smiliar problem, but in my case, subtotal was 0 after adding the product to the cart. Try with this:

$cart->setTotalsCollectedFlag(false); $cart->getShippingAddress()->setCollectShippingRates(true); $cart->collectTotals(); $this->cartRepository->save($cart);

The missing line was $cart->getShippingAddress()->setCollectShippingRates(true);. You can find same solution in \Magento\Checkout\Model\Cart::save() method.

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