How much does Google advertising cost? A case study that shows how your investment can pay you back 40 times over
Case study rocketmotors.sk
E-shop Rocketmotors.sk specializes in products for leisure activities, off-road riding and adrenaline sports. It sells recreational and sports motor vehicles, ATVs and accessories for children and adults. This is a segment where high competition is coupled with high price per click. However, the client trusted us from the beginning and was aware of this fact. Read how Google advertising evolved and how much it cost the client during the 6 months under review.
Challenge: High cost-per-click and uncertainty of investment
High Google ad cost and upfront costs.
The budget was initially limited, so every click had to deliver a realistic result.
Products had a wide price range and a specific target audience.
Solution: strategic campaigns and emphasis on maximizing ROAS
We started working together on October 1, 2023. We set a clear goal: to increase online sales and squeeze every euro out of Google Ads.
Of the several parallel campaigns, two stood out the most, achieving top results:
Performance Max – Main Category: the best performing campaign in terms of volume, which generated the most conversions (over 1,100).This was a Performance Max campaign focused on the main product categories of the e-shop, which generated sales steadily and in high volume at a cost of ~13 € per conversion.
To achieve this performance, we went really in depth when setting up the campaign. We segmented the products consistently so that we were able to accurately target and differentiate the categories and the audience that responds to them. We used dozens of variations of backgrounds – from images to headlines to descriptions – and A/B tested them continuously to know what worked best. Plus, we also worked with a new keyword exclusion option that only recently appeared in PMax campaigns, which helped us refine our targeting even further. This combination of meticulous preparation, data analytics and ongoing optimization allowed us to get the most out of the campaign.
Search Brand: The campaign targeting brand keywords was the cheapest source of conversions (~6.5€) and achieved a very respectable number of orders (over 130). By leveraging brand demand, this campaign was able to convert visitors into customers most effectively.
DSA campaigns with dynamic targeting of specific product categories have also proven successful for us. They brought the client dozens of conversions with an average CPA (approx. €13). In contrast, the content campaign had a weaker performance and served more for awareness building.
Results ROAS 4000 %
We started with a limited budget. As the campaigns gained momentum, the budget increased and the client gradually invested €20,787.18 in Google Ads. Over the entire reporting period from October 1, 2023 to May 31, 2025, we collectively achieved incredible numbers thanks to ongoing optimization:
For every euro invested, the client received a return of €40. That’s a success we don’t see every day in the PPC world. In total, we managed to generate 821,561.78 euros in revenue from Google Ads.
The case study shows that the key is not only the budget, but especially how you handle it. Because even with a higher cost per click, you can achieve a reasonable return if you know what you’re doing. Each campaign had a clear strategy, objective and measurement method. We didn’t just rely on performance per se, but looked at how quickly the investment was being returned, which products were earning the most and how we could support them even more.
Did you know that…
…more than 80% of many companies‘ Google advertising budgets are spent with no real impact on sales? The most common reason is poor targeting, lack of measurement and no optimization. Don’t rely on preset templates. Tailor your strategy based on how your target audience behaves and how they search for specific products.
The 4 things that most influenced the results
It’s not just about the type of campaign or budget. Success hinges on the details that are missed in a quick Google Ads setup. The following steps contributed significantly to achieving the goal of increasing sales through the online channel:
Consistent segmentation – we divided products into smaller logical units to make campaigns more targeted. As a result, the ad was shown to exactly the people who wanted to see it.
Landing pages – the ads did not take people to the homepage, but straight to the product they were looking for. We shortened the path to purchase and reduced the risk of churn.
Keyword exclusion in PMax campaigns – this relatively fresh functionality allowed us to exclude irrelevant queries and reduce wasted budget. This significantly improved both traffic quality and conversion rate.
A/B testing – testing headlines, descriptions, visuals and ongoing adjustments to campaigns helped us to see what was working and make the most of it.
It also worked because we didn’t miss the potential of repeat customers – remarketing played an important role in the campaigns. Indeed, even in the outdoor leisure segment, brand loyalty is emerging as customers buy accessories, service or recommend the store further down the line.
So if you’re wondering how much Google advertising will cost you, don’t forget to ask yourself the second question – how much it can earn you. RocketMotors.sk shows that, when set up correctly, the answer can be surprisingly high. Do you want to increase your PPC sales too? Contact us and get a free Google Ads account analysis.
