How to Manage Marketplace Ads?
Marketplace advertising is buying visibility, and it only makes sense if net profit after advertising remains positive. The essence of management is three decisions: which product to advertise, what ACoS level is acceptable, and at what point to stop. These decisions are made based on unit profit after commission and shipping, not on revenue.
ACoS and ROAS are essentially two sides of the same thing
ACoS shows how much of the sales from advertising goes to ad spend. ROAS tells how many units of revenue each unit of ad budget brings in. They are inverses of each other; which one you use is less important than choosing the right benchmark. The benchmark is not revenue but the product's unit profit before advertising.
When a product's profit margin after commission, shipping and other deductions is at a certain level, ACoS starts producing a loss the moment it exceeds that level. That is why there is no universal threshold for "good ACoS"; each product has its own threshold. ProfitPulse Because it shows net profit per product after commission, shipping and advertising, it makes this threshold discussable product by product.
Which product to advertise and which not to
Advertising does not rescue a weak product; it accelerates a good one. Products with reasonable conversion, adequate stock and unit profit able to carry the ad load are suitable candidates. Advertising a low-conversion product only sends more traffic to a poor page and increases cost. In that case, first fix visuals, title and price.
Advertising a product with declining stock is also a common waste. Demand from ads depletes stock early, the listing drops to passive, and the momentum gained is lost. Title optimization and visual quality: increasing ad budget without fixing them repeats the same mistake at a higher cost.
Separate the organic side when measuring ads
Ad reports show only sales coming from ads. However, advertising often also affects a product's organic ranking; as initial sales accumulate, the product becomes visible on its own. Measuring this effect directly is hard. What you can do is track organic ranking separately during the ad period.
SeoScope tracks daily ranking within the marketplace internal search and on Google; you can see how your organic ranking moved during the ad period as separate data. Knowing the ranking when ads are stopped is the most critical input for budget decisions.
How to do it step by step?
1. Determine your product-level profit threshold
Before enabling ads, calculate the unit profit of each product after commission, shipping and any return cost. Profit margin calculator clarify this threshold with the tool; this is the ceiling of your ad decision.
2. Narrow down candidate products
Don't start with the whole catalog. Start with a limited number of products that have reasonable conversion, safe stock and a wide profit threshold. A wide catalog consumes the budget before you learn anything.
3. Collect data with a small budget
The first-period budget should be enough to gather sufficient data to decide. Don't intervene early; closing a campaign based on a few days of fluctuation produces wrong results.
4. Read the search term report regularly
You usually see here whether the budget goes to irrelevant terms. Eliminate non-converting terms and handle converting terms separately. This is the fastest way to lower ACoS.
5. Make decisions based on profit
Keep a campaign running not because revenue grew, but because net profit after advertising stays positive. ProfitPulse to see per-product profit after advertising and direct the budget accordingly.
6. Monitor price and competition at the same time
When a competitor lowers price, conversion drops and ACoS rises on its own. Hermes tracks price and ranking movements and sends alerts; the cause of a sudden decline in ad performance is often found here.
Approach by product type for ad decisions
| Product status | Ad decision | Rationale |
|---|---|---|
| High profit margin, good conversion | Advertise | Carries the ad load and also contributes to organic momentum |
| Low margin, good conversion | Test with a narrow budget | Threshold is very narrow; a small ACoS increase zeroes profit |
| Good margin, low conversion | Fix the page first | Advertising goes no further than sending traffic to a poor page |
| Declining stock product | Stop advertising | Accelerating demand brings stockout and loss of momentum |
| Newly listed product | Start with a limited budget | High budget with no data increases learning cost |
| Off-season product | Reduce budget | Buying visibility when demand is low raises unit cost |
Common mistakes
1. Applying a single ACoS target across the whole catalog. Each product has a different profit threshold; a common target produces losses on some products and missed opportunities on others.
2. Continuing advertising based on revenue growth. Net profit can turn negative while revenue grows. The decision criterion is the amount remaining after commission, shipping and advertising.
3. Closing a campaign with a few days of data. Marketplace traffic fluctuates by day and week; an early decision measures noise rather than real performance.
4. Not monitoring price and competitor moves while ads are running. The cause of a conversion drop is often price rather than advertising; optimization is done in the wrong place.
Limitations: what does it not cover?
Applying these with awareness lets you set realistic expectations:
Competitors' ad budgets and ACoS values cannot be seen. Ad spend, bid level and campaign profitability stay in the competitor's own panel; no external tool can measure this.
The contribution of advertising to organic ranking cannot be fully separated. Ads and organic interact. Separate measurement gives an approximate result; exact attribution is not possible.
The profit calculation in the ad panel is incomplete. The panel usually shows revenue and spend; commission, shipping, returns and product cost are not included. Net profit must be calculated separately.
Gods Of Sale tools do not manage ad campaigns. Hermes tracks price, ranking, stock and campaign movements and sends alerts; it does not place bids, change budgets or update prices automatically.
The effect of returns and cancellations appears with a delay. Part of the sales coming from ads comes back as returns. Profitability assessment is not final until the return window has closed.
Frequently asked questions
What should an acceptable ACoS be?
There is no universal number. The threshold is the unit profit ratio of the product after commission and shipping. An ACoS below this ratio leaves profit, and above it produces a loss; that is why the calculation must be done per product.
Should I advertise a new product right away?
A limited budget can be used, but the page must be ready. When visuals, title and price are weak, ad costs rise. First, review the visual guidelines side.
If I stop advertising, do sales drop to zero?
If the product has gained a place in organic ranking, it does not drop to zero completely, but a decline is expected. That is why during the ad period it is important to track your organic ranking SeoScope separately with SeoScope; this is important.
Which is more effective, advertising or a price discount?
It depends. A price discount lowers profit on all sales; advertising only creates cost on the sales coming from ads. Compare profit margin based on profit margin.
Where should I combine ad data?
You need to see ad spend in the same table as product cost. ProfitPulse calculates per-product net profit after commission, shipping and advertising for this purpose.
Doing it with the tool
Advertising management is a profit discipline more than a bidding game. Choosing the right product, setting the threshold per product and making the decision based on net profit matter more than growing the budget. When evaluating the effect of advertising, tracking price and competition separately prevents optimizing in the wrong place.
To track price and ranking movements, Hermes, for per-product net profit ProfitPulse, for organic ranking tracking SeoScope can be used. If you want to complete the topic, and profitability analysis and marketplace commissions pages are good next steps.
Last updated: September 18, 2026