Comparison Shopping Service
A different route for your Google Shopping ads.
Semstar CSS helps European ecommerce merchants explore the auction advantage available on eligible Shopping ads. We’ll check your setup and explain whether switching makes sense for your store.
What changes when you use a different CSS?
Google Shopping deducts a margin from bids before entering the auction. An alternative Comparison Shopping Service offers a different route for eligible Shopping ads, giving more of your bid the opportunity to compete.
This is an auction advantage, not a guaranteed 20% reduction in every click or your total Google Ads bill. Your bidding strategy, competition and campaign performance still affect what you pay and the results you achieve.
A clear route from enquiry to switching.
1. Check your setup
I review your current CSS and target markets to confirm whether the service is suitable for your store.
2. Agree your offer
We discuss pricing, what’s included and the switching requirements. You agree the terms before proceeding.
3. Approve the switch
You approve the change, and I guide you through the agreed next steps. You’ll deal directly with Alex.
Questions about Semstar CSS.
Which European markets are eligible?
Google’s CSS programme currently covers Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. We’ll check your target markets and service availability before agreeing a switch.
Is this 20% off every Google Ads click?
No. The margin advantage applies to eligible Shopping auctions compared with using Google Shopping CSS. It is not a refund, a fixed discount on your Google Ads invoice or a guarantee of lower observed CPCs.
Does this apply to all Performance Max spend?
No. A CSS advantage relates to eligible Shopping inventory. It does not apply across every Performance Max placement, such as YouTube, Display or other non-Shopping inventory.
What if I already use a CSS?
Let me know which service you use, or choose “Not sure” in the form. Switching between independent CSS providers does not automatically create a new 20% advantage. We’ll compare your starting point, pricing and service requirements first.
Will I need to change my campaigns or agency?
We’ll review your current Merchant Center setup, campaign arrangements and any agency involvement before recommending the next steps. Any access or account changes will be explained and agreed before proceeding.
What does it cost?
Ask about our introductory CSS pricing. I’ll confirm the fee, currency, any applicable tax, what’s included, the introductory period if offered, and ongoing and cancellation terms before you decide. Sending an enquiry does not sign you up or commit you to payment.
Find out whether Semstar CSS fits your store.
Tell me about your store and where you advertise. I’ll review the details personally and reply about eligibility, pricing and next steps.
Ask about introductory pricing. Price and terms confirmed before switching.
Prefer email? hello@semstar-ads.com