Investing in sponsored ads inside the marketplace itself has become routine for anyone selling food, treats, and accessories online, but not every operation knows how to tell when that investment actually pays off. Hugo Galvao de Franca Filho, founder and director of Enjoy Pets, evaluates this kind of decision by looking at margin per product before running any campaign, because paid ads reduce net margin and only make sense when the return in sales clears that added cost by a comfortable margin.
The temptation to appear at the top of search results is strong, especially when a direct competitor already holds that spot consistently. But deciding on impulse, without calculating the real effect on margin, tends to produce an operation that sells more in volume and earns less in net results by the end of the month, the opposite of what any media investment should achieve.
Products with tight margins rarely sustain paid ads
Categories like basic restock food usually carry thinner margins precisely because they compete directly on price against dozens of similar sellers on the same marketplace. Adding the cost of paid ads on top of an already tight margin can turn an apparently good sale into a real loss, even when the product sells well in volume during the campaign period.
Enjoy Pets, featured at www.enjoypets.com.br, avoids concentrating ad spend on this type of product, prioritizing other ways to gain visibility, such as strong descriptions and consistent reviews. Hugo Galvao de Franca Filho considers this criterion more reliable than simply copying a competitor’s media strategy without understanding the real margin behind that competitor’s price.
Higher-margin products justify a more aggressive investment
Premium line items, supplements, and niche products usually carry enough margin to absorb the cost of ads without hurting the sales outcome. In these cases, appearing at the top of search speeds up discovery for a product that, without paid visibility, would take much longer to gain organic traction inside the marketplace itself.
Hugo Galvao notes that this type of product tends to convert better when paid ads come paired with a complete technical description, since buyers of these items research more before deciding. Without that combination, the paid click doesn’t convert into a sale, and the media investment ends up sustaining only views, with no real impact on that period’s revenue.
The mistake of measuring success by click volume alone
Click volume is the easiest metric to track inside any marketplace’s dashboard, and because of that, it becomes the reference point even when it doesn’t tell the full story of a campaign. An ad can generate a high click count and low conversion, a sign that the advertised product doesn’t match what the buyer expected to find after clicking that specific search result.
Looking at cost per sale, rather than cost per click, reveals whether that investment truly sustains the operation over the medium term. Hugo Galvao de Franca Filho reinforces that this metric should guide every decision to pause, maintain, or increase a campaign’s budget, rather than decisions based only on how much traffic the ad brought to the product page.
Testing with a small budget reduces the risk of a rushed decision
Before committing significant budget to a new product, testing with a reduced amount for a few days shows whether that item has real potential for paid conversion. This test avoids the common mistake of investing heavily right from the start, based only on intuition about what should sell well within that specific catalog category.
Scaling the budget only after confirming that margin sustains the cost per sale is what separates operations that use paid ads with discipline from those that treat paid media as a gamble. This kind of discipline, in Hugo Galvao’s view, tends to pay off more over the medium term than any aggressive campaign launched without prior testing of real conversion.

