I have a website, sell a products with and without installation service. I want two add to cart buttons, one with and one without installation on a product page. The price for installation is variable for each product.

I write the code below in {theme}/template/ajaxcart/catalog/product/view/addtocart.phtml near Add to Cart button. The price that is displayed add the button is € 0,00 it should be € 350,00 and when you use this button the totaal page refresh.

    $_price = Mage::getResourceModel('catalog/product')->getAttributeRawValue($_product->getSampleProductId(), 'price', Mage::app()->getStore()); 
    $_formattedPrice = Mage::helper('core')->currency($_price, true, false);
    $_buttonTitle = "Order Sample @".$_formattedPrice;?>
<button type="button" title="<?php echo $_buttonTitle ?>" class="button btn-cart" onclick="setLocation('<?php echo Mage::getUrl('checkout/cart/add/product/'.$_product->getSampleProductId()) ?>')"><span><span><?php echo $_buttonTitle ?></span></span></button><?php endif; ?>

How can I make this extra add to cart button to work? Thanks

  • have you created new attribute to store installation price? Commented Feb 14, 2017 at 9:18
  • I don't use a atrribute for the price now Commented Feb 15, 2017 at 10:22
  • then how will you get the installation price for particular product ? Commented Feb 15, 2017 at 14:35
  • That's one problem I don't know. Can you tell me how? Commented Feb 15, 2017 at 15:27
  • if you dont want to do it via custom option then you can create new attribute called installation_price to store installation price Commented Feb 15, 2017 at 15:49

1 Answer 1


You don't have to make extra cart button for this. Just use default custom option simple product for installation service.

  1. You have to create a simple product with regular price.

  2. Add custom option in that product for Installation service and put extra price of installation only.

It will give you extra check-box of installation service and its price in that product. When user selects that check-box then price will update automatically.

  • I want a extra add to cart button for this option. At the production site this is in use now. But we want a extra add to cart button for the installation service. Do you know how to do this? Commented Feb 15, 2017 at 10:20
  • A custom option with its own add to cart button is also a good start Commented Feb 15, 2017 at 17:34

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