Add Sale Price to Shopify’s Google Shopping feed

As of Aug 12, 2020 Shopify’s Google Shopping app does NOT send compare_at_price to Google Merchant Center. This means that you are unlikely to receive the SALE annotation in your Google Shopping ads when your products are on sale:

To fix this, you must create and upload a supplemental data feed to Google Merchant Center.

Create a Price Feed in Shopify

The first step is to create a data feed in Shopify containing your products sale and regular prices. We can accomplish this by creating a custom Shopify Collection Template that will output XML data instead of HTML:

1. Create a new Collection Template called collection.xml-sale-pricing.liquid with the following code:

{% layout none %}<?xml version="1.0"?>
<rss xmlns:g="http://base.google.com/ns/1.0" version="2.0">
{% paginate collection.products by 1000 %}
{%- assign CountryCode = 'US' -%}
{%- if shop.currency == 'CAD' -%}{%- assign CountryCode = 'CA' -%}{%- endif -%}
<channel>
<title>{{ shop.name }} {{ collection.title | strip_html | strip_newlines | replace: '&', '&amp;' | replace }}</title>
<link>{{ shop.url }}</link>
<description>{{ collection.description | strip_html | strip_newlines | replace: '&', '&amp;' }}</description>
{% for product in collection.products %} 
  {% for variant in product.variants %}
    {%- if variant.compare_at_price > variant.price -%}
      {%- assign OnSale = true -%}
      {%- assign Price = variant.compare_at_price -%}
      {%- assign SalePrice = variant.price -%}
        <item>
            <g:item_group_id>shopify_{{ CountryCode }}_{{ product.id }}</g:item_group_id>
            <g:id>shopify_{{ CountryCode }}_{{ product.id }}_{{ variant.id }}</g:id>
            <g:price>{{ Price | money_without_currency }} {{ shop.currency }}</g:price>
            <g:sale_price>{{ SalePrice | money_without_currency }} {{ shop.currency }}</g:sale_price>
        </item>
    {%- endif -%}
{% endfor %}
{% endfor %}
</channel>
</rss>
{% endpaginate %}

Also available on github

2. Create a new collection called “google-feed-sale-price” and choose xml-pricing-feed as your collection template.

3. Preview the collection and copy the url. Your url should look something like this: yourstoredomain.com/collections/google-feed-sale-price

Add a Supplemental Data Feed in Google Merchant Center

1. Open Merchant Center and go to
Products > Feeds > Supplemental Feeds > Add Supplemental Feed

• Name: Sale Pricing Update
• Feed Type: Scheduled Fetch
• File Name: google-feed-sale-price
• File Url: yourstoredomain.com/collections/google-feed-sale-price

Leave everything else as default values and click Continue

2. Make sure there’s a checkmark beside Content API and click Create Feed

3. You should now see your newly created feed in the Supplemental Feeds section. Click on your feed’s name and then click on Fetch Now to update pricing data immediately.

Done

It may take up to 30 minutes for your main feed to be updated. Any new sale pricing will now be uploaded once per day.