How much does Bigconvert CSS cost?

€18.99 per month per store, plus VAT where applicable. No commission on your budget, no set-up fee, no fixed-term contract. Cancel any time.

Is the 20% saving the same at every CSS?

Yes. The saving comes from Google's auction rule (about 80% of the bid enters the auction through Google's CSS, 100% through a partner CSS), not from the provider. Providers differ in price, support, tools and countries.

Do I pay for clicks to the CSS?

No. Clicks are still paid to Google Ads, exactly as before. You pay the CSS only the subscription.

From which budget is a CSS worth it?

From about €150 a month of Google Shopping budget the fee pays for itself; from €300 up the saving is several times the cost.

How much does a Google CSS cost: pricing models, public prices and when it pays off

"How much does a CSS cost?" has three answers, because there are three pricing models. The difference between the models matters more than the difference between prices: on a €2,000 monthly ad budget, a 3% commission costs three times more than the most expensive flat fee on the market. Below are the models, the public prices of the CSSs most stores in Europe compare, and the calculation that tells you from which budget it pays off.

The three pricing models

Model	How you pay	Good for	The catch
Flat monthly fee	A fixed amount per store (or per domain) per month, whatever your budget. Bigconvert CSS: €18.99/month	Any store with an ad budget above ~€150/month	Check whether the price is per store, per domain or per country; with 5 countries some CSSs charge 5 times
Percentage of ad spend	1–5% of what you spend in Google Ads	Very small budgets (under €150/month)	Grows with the budget; at €2,000/month, 3% is €60, three times a flat fee
Bundled in an agency fee	No separate charge; the agency manages your campaigns and puts you on its CSS	Stores that want an agency anyway	You cannot take the CSS without the agency; change agency and you lose the CSS too

Public prices of CSSs available across Europe (October 2026)

The list uses the prices shown publicly on each provider's website at the date of this article. Prices change; check each site before deciding. Competitors are included because a comparison without them helps nobody.

CSS	Public price	Model	Free trial
Bigconvert CSS (css.bigconvert.com)	€18.99/month per store	Flat fee, no commission	No; full refund if not satisfied in the first month
csspartner.io	≈€16/month per domain (79 RON)	Flat fee	30 days
Sellie CSS	≈€19/month	Flat fee	14 days
Shoparize	≈€27/month	Flat fee	30 days
Producthero	≈€29/month	Flat fee + feed tools	30 days
Agencies with their own CSS (Bigconvert and many local agencies in each country)	Not published; included in the agency fee	Bundled with campaign management	—

The important observation: among flat-fee providers the differences are a few euros a month. The cost-per-click saving is the same at all of them, because it comes from Google's auction rule, not from the CSS. What differs is support, extra tools, countries covered and how fast they activate you.

Save up to 20% on every Google Shopping click

Bigconvert CSS: €18.99 per month per store, no commission, cancel anytime. Activation takes 5 minutes.

Activate Bigconvert CSS

From which budget it pays off: the calculation

Monthly saving = your Google Shopping budget × the real saving rate (realistically 10–20%). Cost = the subscription. It pays off when the saving clearly exceeds the fee.

Shopping budget / month	Saving at 10%	Saving at 20%	Fee €18.99	Net (at 15%)
€150	€15	€30	€18.99	≈ +€3.50
€500	€50	€100	€18.99	≈ +€56
€2,000	€200	€400	€18.99	≈ +€281
€10,000	€1,000	€2,000	€18.99	≈ +€1,481

In practice: below €100–150 a month of budget a flat-fee CSS barely pays for itself; above €300 a month it becomes one of the cheapest optimisations available, because it needs no work after activation.

Hidden costs to check before you sign

Set-up or activation fee. There should be none: activation is an approval in Merchant Center.
Fixed-term contract (6–12 months) or notice period. With Bigconvert CSS you cancel any time from the client portal, no penalty.
Price per country. If you sell in 5 countries, ask explicitly whether you pay once or 5 times.
Access to your Google Ads account. A self-service CSS does not need it. If you are asked for admin access, ask why.
VAT. Prices above exclude VAT. EU companies with a valid VAT number pay without VAT (reverse charge).

Is there a free CSS?

There are two cases where you do not pay directly: a CSS bundled in an agency fee (you pay the agency) and the 14–30 day free trials some CSSs offer. A permanently free CSS with no other service attached does not exist, because running a CSS has costs (a comparison site with thousands of products, certifications, support) and Google does not pay CSSs.