๐ŸŽ‰ New: Over 1.5 billion sales generated through CSS in 2025 in Europe See results โ†’

Google CSS Partner Premium Google CSS Partner
1000+ active merchants
verified Since 2021 in Romania

Paying too much for Google Shopping?

Switch to Bigconvert PREMIUM CSS and instantly save 20% on cost per click.

Same visibility, same campaigns, same Google Ads account โ€” just lower costs. Activation in 5 minutes, no technical migration.

Activate now โ€”
โ‚ฌ19.99/month arrow_forward
Google Shopping Comparison - By Google vs By BigConvert with 20% CPC savings
20%
CPC savings
5 min
Activation time
700+
CSS partners in EU
โ‚ฌ1.5B
CSS sales in 2025

Works with any store that has Google Merchant Center

lightbulb WHAT IS CSS?

The secret that big European stores already know

Comparison Shopping Service (CSS) is a system created by the European Commission in 2017 to ensure fair competition in Google Shopping.

The problem: Google Shopping applies a ~20% margin on every auction. When you bid โ‚ฌ1, only โ‚ฌ0.80 effectively enters the competition.

The solution: CSS partners like Bigconvert do not apply this margin. When you bid โ‚ฌ1 through us, all โ‚ฌ1 enters the auction โ€” or you can reduce CPC by 20% and keep the same visibility.

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Same position in results, same Quality Score
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You continue using the regular Google Ads interface
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Your campaigns don't stop โ€” the switch is instant
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Officially approved by Google, not a "hack" or trick

How the 20% difference works

Google Shopping
โ‚ฌ0.80
enters the auction
Your bid: โ‚ฌ1.00
Google margin: -โ‚ฌ0.20
Effective: โ‚ฌ0.80
Bigconvert PREMIUM CSS
โ‚ฌ1.00
enters the auction
Your bid: โ‚ฌ1.00
CSS margin: โ‚ฌ0.00
Effective: โ‚ฌ1.00
= 25% more bidding power or reduce CPC by 20% and maintain visibility
trending_up VERIFIED RESULTS

Real industry case studies

Results published by marketing agencies and CSS partners across Europe

CASE STUDY
-33%
CPC reduction
+61%
ROAS increase

Toy store from Norway. Cost per transaction decreased by 48% after switching to CSS.

Sursa: DFW Case Study
CASE STUDY
+63%
revenue increase YoY
+31%
conversion increase

British children's products brand, Q4 2025. Directly cited by Google in official communications.

Sursa: Google Official Blog
CASE STUDY
-10%
CPC reduction
+10%
ROAS increase

Swedish swim equipment retailer. A/B test during peak season, summer 2025.

Sursa: PH Case Study 2025

Official Google CSS Statistics 2025

Data published by Google in the official communication from October 2025

โ‚ฌ1.5B
Sales generated in Europe through CSS in 2025
700+
Active CSS partners in the EU
19B
Clicks generated by CSS in 2025
+92%
CSS click growth vs. 2021

You're in good company with Bigconvert PREMIUM CSS

Noriel
Otter
Watchshop
Fragranza
Editura Trei

Trusted by merchants across Europe

Join over 1000 stores saving on Google Shopping

Stores from:
๐Ÿ‡ท๐Ÿ‡ด Romania
๐Ÿ‡ฉ๐Ÿ‡ช Germany
๐Ÿ‡ฌ๐Ÿ‡ง UK
๐Ÿ‡ซ๐Ÿ‡ท France
๐Ÿ‡ช๐Ÿ‡ธ Spain
๐Ÿ‡ฎ๐Ÿ‡น Italy
โ˜… โ˜… โ˜… โ˜… โ˜…

"I switched to Bigconvert CSS 8 months ago. The savings are real โ€” CPC dropped noticeably and campaigns continue to perform just as well. Highly recommend!"

MC
Mihai C.
E-commerce owner, Romania
โ˜… โ˜… โ˜… โ˜… โ˜…

"As an agency, we migrated 15 clients to Bigconvert. The process was simple, with no downtime. Our clients are happy with the budget savings."

AP
Alexandra P.
Digital Marketing Agency
โ˜… โ˜… โ˜… โ˜… โ˜…

"I was skeptical at first, but the numbers don't lie. On a budget of โ‚ฌ3000/month, I save ~โ‚ฌ580 after the subscription. Plus, the support is excellent."

DV
Dan V.
Fashion e-commerce
Google CSS Partner Google CSS Partner
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calculate SAVINGS CALCULATOR

Calculate how much you can save

Enter your monthly Google Shopping budget and see estimated savings

โ‚ฌ500 โ‚ฌ50,000
I spend: โ‚ฌ5,000 /month
Without CSS (Google Shopping)
With Google's ~20% margin
Monthly budget: โ‚ฌ5,000
Google margin (~20%): -โ‚ฌ1,000
Real value in auction: โ‚ฌ4,000
WITH BIGCONVERT CSS
Without Google margin
Monthly budget: โ‚ฌ5,000
CSS subscription: -โ‚ฌ19.99
Real value in auction: โ‚ฌ4,980
Monthly savings:
โ‚ฌ980
Yearly: โ‚ฌ11,760
trending_up ROI: 4900% on subscription

* Calculation assumes 20% savings on advertising budget. Actual results may vary depending on industry and competition.

rocket_launch QUICK ACTIVATION

How it works โ€” step by step

No technical migration, no campaign downtime. Setup in 10 minutes.

inventory_2
Your products
Existing feed in
Merchant Center
arrow_forward
storefront
Google Merchant Center
Approve the request
from Bigconvert
arrow_forward
CSS
bolt
Bigconvert PREMIUM CSS
Submits products
without the 20% margin
arrow_forward
ads_click
Google Ads
Shopping campaigns
& Performance Max
arrow_forward
shopping_bag
+25%
Google Shopping
Products appear with
25% more power

info Bigconvert is a Self-Service CSS โ€” we don't manage your campaigns, we just give you the price advantage. You keep full control in Google Ads.

1

Fill in the form

Enter your Merchant Center ID and contact details. Takes 2 minutes.

2

Pay the subscription

โ‚ฌ19.99/month via Stripe. Cancel anytime, no penalties.

3

Approve the request

You receive an email from Google. Press one button: "Approve".

โœ“

Done! Start saving

From that moment, every click costs up to 20% less.

info

Important: Your Google Ads campaigns continue running without interruption. You don't need to create new campaigns, change the product feed, or modify settings. The switch happens "behind the scenes" and doesn't affect history or Quality Score.

payments SIMPLE PRICING

One price, no surprises

Fixed monthly fee, regardless of how many products you have or how much budget you spend

bolt PREMIUM CSS
โ‚ฌ19.99 /month

+ VAT

  • check_circle Unlimited products
  • check_circle Unlimited ad budget
  • check_circle CPC reduction of up to 20%
  • check_circle Activation in 5 minutes
  • check_circle Dedicated technical support
  • check_circle Cancel anytime, no penalties
Activate Now

lock Secure payment via Stripe

help FREQUENTLY ASKED QUESTIONS

Got questions?

Is it legal and approved by Google?

Yes, absolutely. The CSS program was created following a European Commission decision in 2017. Google itself promotes this system and publishes annual reports on CSS partner success. Bigconvert is an officially certified Google partner.

Will my campaigns stop during the switch?

No. The switch happens "behind the scenes" and does not affect campaign operation in any way. There is no downtime, no history is lost, and Quality Score remains intact.

Do I need to change anything in Google Ads?

No. You continue using the same Google Ads interface, the same campaigns, the same product feed. The only difference is you pay less per click.

Does it work for Performance Max too?

Yes. The CSS discount applies to both classic Shopping campaigns and the Shopping components of Performance Max (pMax) campaigns.

What happens if I want to cancel?

You can cancel your subscription anytime from the client portal, without penalties. Your account will automatically revert to standard Google Shopping. There are no long-term contracts.

How quickly will I see the savings?

Immediately after approval (usually the same day). The 20% discount is automatically applied to all clicks from Shopping campaigns.

Why only โ‚ฌ19.99/month? Other services charge percentages...

We believe a fixed fee is fairer. The more you spend on advertising, the more you save โ€” without paying extra to us. Our goal is to build long-term relationships, not to profit from your budget.

Activate the Premium CSS service

Choose your account type and start saving on Google Shopping

MOST POPULAR
store

Online store owner

You have an e-commerce store and want to reduce costs on Google Shopping and Performance Max.

  • check One Merchant Center account
  • check Simple activation in 5 minutes
groups

Marketing agency

You manage campaigns for multiple clients and want to offer them the CSS advantage.

  • check Multiple accounts at a special price
  • check Custom pricing
verified
Satisfaction guarantee

You can cancel your subscription anytime, without penalties. There is no long-term contract. If you are not satisfied in the first month, we will refund your money.

help 9-11 digits, found in the top right corner of Google Merchant Center

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lock Secured by Stripe โ€ข โ‚ฌ19.99/month + VAT โ€ข Cancel anytime

Trusted by 1000+ merchants in Romania and Europe

Google CSS Partner
How does it work?
2 min video guide
NEW
CSS activation guide
Activate now โ€”
โ‚ฌ19.99/month