Google Dynamic Remarketing Code

bhavya

Hello,

I have a webshop with more than 30,000 products. I want to start the google dynamic remarketing i.e. show the ad with the product that a user visited in my shop but did not checkout. To do so, I need to add the below Event snippet in all the product pages.

1. How can I dynamically fetch the price and product id i.e. in place of replace with value below?
2. Is there any variable for the same? 
3. Also, in order to place it in all the products page, where exactly should this be placed in the template?

<script>

 gtag('event', 'page_view', {

  'send_to': 'AW-XXXXXXXX',

  'value': 'replace with value',

  'items': [{

   'id': 'replace with value',

   'google_business_vertical': 'retail'

  }]

 });

</script>