What Google Ads costs and what it returns

Google Ads is a powerful channel for webshops. It offers direct visibility to people who are looking for a product, is easy to measure and can quickly produce revenue. At the same time, the system raises many questions, especially about costs and returns. What is a sensible ad budget for a webshop? When does a campaign become profitable? And who is it interesting for at all?

This blog covers what advertising on Google costs, which factors determine the return and when it makes sense to invest seriously.

How Google decides what ads cost

Advertising on Google works through an auction system. Webshops bid on keywords or audiences, and Google decides who is shown. The cost per click (CPC) is therefore set by competition and relevance, not by a fixed price list. When several parties want to reach the same audience, the price goes up automatically.

Besides competition, the quality of the ad plays a role too. Google looks at the relevance of the ad, the click behaviour of users and the quality of the landing page. This is called the quality score. The higher that score, the less you pay per click. This means a webshop with well-written ads, fast load times and a clear structure is often cheaper than a similar competitor with a messy website.

A realistic budget for webshops

A frequently asked question is: how much should a webshop invest in Google Ads at a minimum to see results? Although there is no fixed answer, practical experience shows that an ad budget of 500 to 1,000 euros per month is a good starting point. This leaves room to promote several products, test bidding strategies and give the algorithm a chance to learn.

For those who have been active for longer or have a larger range, the monthly budget is often higher. Webshops that scale up easily invest 5,000 euros a month or more. In the end it depends on the number of products, the margins, the competition and the growth goal. It is important to note that the ad budget is something different from management costs. For setting up, managing and optimising campaigns, specialists usually charge between 300 and 2,000 euros per month, depending on volume and complexity.

What does it return?

The most important question is of course not what it costs, but what it returns. Webshops usually measure this with ROAS (Return on Ad Spend). A ROAS of 4 means every euro spent on ads has brought in 4 euros of revenue. That sounds attractive, but whether it is enough depends on the margins. For a webshop with high margins, a ROAS of 3 can already be profitable. For a shop with low margins, that figure has to be much higher to break even.

Besides ROAS, successful webshops also look at Customer Lifetime Value. How many times does a customer come back? If someone spends 50 euros today, but has bought 300 euros' worth a year from now, the first conversion may well cost a bit more. Webshops that have a good view of this can advertise more aggressively, because they spread the return over several purchases.

Why campaigns sometimes don't pay off

There are plenty of examples of webshops that try Google Ads but give up because the results disappoint. This is rarely down to the platform itself, and more often to an unsuitable approach. One of the most common causes is a webshop that is not technically in order. Think of slow load times, confusing navigation or no clear call to action. If users drop off before they buy anything, it does not matter how good the ad was.

Pricing plays a role too. If a product is sold by several providers, the consumer will almost always choose the cheapest option. A webshop that advertises through Google but is structurally more expensive than competitors, without a strong brand or a unique proposition, loses that fight.

In addition, mistakes are regularly made in targeting. A common mistake is using keywords that are too broad. This leads to many clicks but few sales. An example: a webshop selling running shoes advertises on the word “shoes”. The traffic that comes in is far too general and often has no purchase intent. This kind of traffic costs money without returning anything.

How campaigns do become profitable

To make campaigns profitable, the webshop has to do more than switch on an ad. The whole chain has to work. From product feed to landing page. From ad copy to measurement plan.

A good start is to begin with a small part of the range. Choose products with a proven conversion rate or a high margin. Then measure everything. Use Google Tag Manager to record purchases, shopping basket traffic and other important events. Only with the right data can campaigns be steered.

The product feed deserves extra attention. Titles must be keyword-focused, images must be sharp and prices must be right. Tools like Channable help to enrich, filter or optimise feeds automatically. Especially in Shopping campaigns this is a crucial success factor.

Another important part is remarketing. Visitors who showed interest earlier but have not yet bought can be approached again via Display, YouTube or Search. This audience is often cheaper and converts better than cold traffic. It lowers the average cost per conversion considerably.

Finally, there must be attention for the bigger picture. Does the website work well on mobile? Is the stock up to date? Do the reviews match the promise on the site? All these elements decide whether a click actually leads to an order.

Is Google Ads suitable for every webshop?

Not every webshop is ready for Google Ads. Starting shops with a limited range, low margins or many technical shortcomings are better off working on their basics first. If the site does not convert without ads, it will probably not be different with ads.

On the other hand, there are also many webshops that are ready to advertise but don't dare to yet. They are afraid of high costs or have had bad experiences before. This is often due to a lack of guidance, insufficient preparation or wrong expectations. With the right strategy, Google Ads is a promising channel for smaller webshops too.

Conclusion

Advertising on Google does not have to be expensive, but it does call for a smart approach. The costs are set by the market, the campaign type and the quality of the webshop. A well-set-up account with strong ads, an optimised product feed and accurate tracking gets more out of every budget.

For those who see Google Ads as a long-term strategy, it is a scalable and measurable way to grow. The key is not in the budget itself, but in how that budget is used. With realistic expectations, clear goals and strong execution, Google Ads becomes a profitable channel instead of a cost.

Webshop owners who want to get serious about online growth do well not to leave this channel aside, but to invest in it. Those who are ready get more out of it in the long run than goes into it.