How much does Google Ads cost, and when is it worth it?

“How much does it cost” is the most common question around Google Ads, and there is no single number for it — but there is a calculation. The price of a click differs by trade and by keyword, and the return does not depend on the ad alone, but also on what receives the person who clicked.

In this article I describe how the price forms, how you can work out with your own numbers whether it pays off, and what happens in a campaign's first months.

How does the price of a click form?

In Google Ads you do not buy from a price list — you take part in an auction. Every single search runs a bidding round among those who want to advertise, and its outcome decides who appears, in what order and at what price — the process is described in Google's official help pages. That is why the price differs by trade: where more advertisers compete for the same searches, a click costs more.

Money is not the only thing that counts in the auction. Google also looks at how well the ad and the page behind it match what the searcher wants to see — a better-matching ad can get a better position for less. For the advertiser this is good news: work spent on quality comes back in the price.

What does the return depend on?

Return comes down to three numbers: how much a new client brings, how many enquiries it takes to win one client, and how many clicks it takes to get one enquiry. These three numbers differ for every business, but the calculation is the same everywhere.

A round example: if a new client brings a hundred thousand forints on average, and one in five enquiries becomes a client, then one enquiry is worth twenty thousand forints. If an enquiry takes ten clicks, it is worth bidding up to two thousand forints per click — above that the campaign loses money, below it the campaign makes money. The figures here are example figures; the formula is the point, and it works the same with your own client value and your own ratios.

The same calculation also shows when Google Ads is not for a business: if the client value is low and the competition is expensive, the numbers do not work out. In that case I say so — and the calculation remains, it can be done for another channel too.

Why do the wrong enquiries come at first?

A new campaign casts a wider net at first than it should. The ad shows for searches that later turn out not to bring clients — from other towns, for other services, from job seekers. This is not a fault but the starting state: the system does not yet know what a good search looks like, and it learns that from the incoming data.

Narrowing is continuous work: reading through the search terms that actually arrived, excluding the bad ones, reinforcing the good ones, week after week. Managing a campaign is mostly this for me — the setup is not the bulk of the work, this aftercare is.

What does the website need to provide?

The ad only takes someone as far as clicking through to the page — from there, the page does the work. If the visitor does not immediately find what the ad promised, they step back, and the click was paid for without a result. The advertised page therefore has to speak plainly about what the ad promised: what you do, where, and how to reach you.

Because of the auction logic, this also feeds into the price: a page that matches the search means cheaper clicks. That is why ads and the website are not two separate jobs for me — alongside the campaign setup, I also look at where the click lands, and if needed, we work on that too.

How I do it in practice

Before setting up the campaign, I put measurement in order. If it is not visible whether a click turned into an enquiry — a form submission, a phone call, an email —, then all you know about the campaign is what it cost, not what it brought. A campaign without measurement flies blind, so for me this is a precondition, not an extra.

Then comes the structure: separate ad groups for separate services, precise geographic targeting, and frequent checks in the first weeks — reading the search terms, building the exclusion lists. The monthly rhythm loosens later, but it does not stop: the market and the competitors move, and the campaign follows them.

What does this look like live? Among my projects, the case study about a trade business's campaign is the closest to this page: there, visibility was the axis of the work, from the campaign to the website.

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