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Google Comparison Shopping Service (CSS)

Reaching millions of potential customers each day

We help retailers and brands adverts reach millions of potential customers each day.

Save up to 20% on your Google Shopping campaigns via our Productcaster CSS solution.

  • Largest premium CSS partner across Europe…improving retailers shopping performance, reducing costs and increasing revenue
  • Trusted by the best…we partner with Europe’s leading retailers and agencies
  • Seamless onboarding and launch…no need to change your existing account, we’re integrated with Google merchant center content API
  • Access the benefits of launching immediately…through accessing our measurement framework and specialist shopping team
  • Scalable SaaS comparison platform…serving in excess of 90 million products on behalf of more than 500 brands across all EU markets
  • Aligned with Google…continue to launch new features with monthly technology releases, based on partner and user feedback

For Retailers

Productcaster enables retailers to improve their PLA performance by entering the Shopping Ads auction via a Comparison Shopping Partner at a more competitive rate, increasing your impression share and/or improving your ROI.

  • Access to our market leading feed management technology
  • Full onboarding and migration support
  • A dedicated statistical measurement and reporting framework

For Agencies

Productcaster’s fully supported white label CSS technology solution offers you the infrastructure to become a CSS partner for your clients.

  • Access to our market leading feed management technology
  • Full onboarding and migration support
  • A dedicated statistical measurement and reporting framework
“We’re pleased to welcome Productcaster as a Comparison Shopping Service partner. Their technological capability and retail experience makes them a welcome arrival to our CSS programme.” Ian Carrington, MD Performance Media Solutions EMEA Google
“After trialling other CSS partners we chose Productcaster given their great performance, simple migration, no need to set up new accounts and transparency of pricing. We are happy to be working with them.” Lee Faetz, Ecommerce Director, Evans Cycles

Get in touch with the team

For more information about what Productcaster can do for you, contact:

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Where will my Productcaster ads show on Google?

There is no change. Your Shopping ads placed by Productcaster will show on Google search results page and the shopping tab. To avoid user confusion, they are also shown on the Productcaster website. All Comparison Shopping Sites, including Google Shopping, have the same opportunities to place ads on your behalf on Google general search results pages. No ad space is reserved for any particular Comparison Shopping Site.


Will the customer not be able to click directly to the retailer?

The customers’ journey will remain completely unchanged, they will go straight through to the product page of the retailer if they click anywhere on the Shopping ad. The only change being the link in Shopping ad where it says ‘By Google’ will change to ‘By Productcaster’ – our comparison site brand name, if people click on this link as happens now they will be directed through to the Comparison Shopping Site in these examples either to the Google Shopping page or the Productcaster CSS website. If people click on the ‘By Productcaster’ link you are not charged for this.


Will my products be shown several times next to one another?

Google do their best not to show multiple instances of a product from a single merchant. If Google identifies that the same product from the same merchant has been uploaded by several Comparison Shopping Sites, they only show it once in the ad unit.

Different products from the same merchant can appear via several Comparison Shopping Sites in the same unit. For example, if a user searches for running shoes, one model of running shoe you sell may appear in an ad from Comparison Shopping Site A while another model appears in an ad from Comparison Shopping Site B. The CPCs paid by the winning Comparison Shopping Sites also do not increase in such a scenario because a merchant is never second-priced against itself.

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