Bigconvert CSS vs Producthero vs csspartner.io: an honest comparison

The three flat-fee CSSs stores most often compare, side by side on price, free trial, support, countries, tools and status. The cost saving is the same at all three; the differences are elsewhere.

By Updated: 6 min read

We write this comparison as one of the three. To make it useful we included only publicly verifiable information (the prices on each site in October 2026) and we say clearly where the others are better. The cost-per-click saving is identical at all three, because it comes from Google's auction rule and not from the provider; so this comparison is about price, support, countries and tools.

The comparison in short

Bigconvert CSSProductherocsspartner.io
Public price (Oct 2026)€18.99/month per store≈€29/month≈€16/month per domain (79 RON)
Free trialNo; full refund in the first month if not satisfied30 days30 days
ContractMonthly, cancel any timeMonthlyMonthly or annual (2 months free on annual)
SupportEnglish and Romanian: email, WhatsApp, during working hoursEnglish and other languagesSeveral languages; check the channels
CountriesEvery country in the CSS programmeMost EU markets21 EU markets
Extra toolsNone; pure self-serviceYes: feed optimisation, product labelling (bestsellers, "zombies"), insightsOptional: click-fraud protection (priced separately)
Google statusCSS Partner; Premium through Tidyshopping (2019) and Epio (2023); re-certification expected Jan 2027PremiumPremium (per its own site)
Active stores2,000+ across 3 CSSs (Oct 2026)Not publishedNot published
Based inRomania (Bucharest)NetherlandsEurope

When Producthero is the better choice

If you have a large feed with hundreds or thousands of products and want tools that segment products by performance (labels for bestsellers, products without sales, margins) straight into Google Ads, Producthero bundles that. For a store that actively optimises its Shopping campaigns, the ~€10 a month more than Bigconvert can be worth it. 30-day trial, so you test at no risk.

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

When csspartner.io is the better choice

If you want the lowest possible fee, csspartner.io is a few euros a month cheaper than Bigconvert, with a 30-day trial. Check two things first: whether the per-domain price means a price per country when you sell in several, and what support you get in your language.

When Bigconvert CSS is the better choice

  • You want fast human support on WhatsApp, from people who manage Google Ads accounts every day.
  • You sell, or will sell, in several countries and do not want to pay several times: one subscription covers every country in the programme.
  • You want no extra tools, just the saving, with no access to your Google Ads account.
  • You have several stores or you are an agency: volume pricing (write to [email protected]).

What does not matter in the comparison

The size of the saving. All three enter the auction with 100% of your bid; Google's CSS enters with ~80%. Nobody can offer "more than 20%".

Activation speed. At all three, activation is an approval in Merchant Center and takes minutes.

Risk. At all three you can leave any time and the Merchant Center account stays yours. The real difference in risk is zero.

Frequently asked questions

Does Producthero cover Romania?expand_more

Yes, Producthero covers Romania; the public price is around €29 a month with a 30-day trial (October 2026, check their site).

Can I try Bigconvert CSS for free?expand_more

We have no trial period, but if you are not satisfied in the first month we refund the subscription in full.

Can I move from Producthero or csspartner.io to Bigconvert (or back)?expand_more

Yes, any time. Approve the new CSS in Merchant Center and deactivate the old one; there is no lock-in period.

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

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