Ask experienced Amazon sellers whether to switch on Sponsored Products the day a listing goes live and you get two confident answers. Advertise immediately, says one group: a new listing has no organic ranking, so ads are the only traffic you can buy. Wait for reviews, says the other: the same clicks convert worse with nothing under the star rating.
Both describe something real. The disagreement is about which cost is larger — clicks that do not convert, or a launch spent without sales. Below are both cases, then a decision rule built from your stock, your profit per unit, and what you can afford to lose.
01Why do experienced sellers disagree about when to start?
Because each camp measures a different loss. The day-one seller sees what early advertising cost: the ad spend column, and it is uncomfortable. The waiting seller sees the money not spent, but not the ranking not built, because a ranking you never had leaves no record.
One cost is measured and painful. The other is real but invisible. These arguments are a measured number arguing with an unmeasured one, which is why they never resolve.
Sellers also widely report that a brand-new listing gets more visibility in its first weeks, and that this fades. Amazon does not document any such programme, publish a duration, or confirm it exists, and reported durations differ from seller to seller.
Treat that early visibility window as an observation, not a rule. A plan that works only because a boost ends on a particular day depends on a number nobody can show you.
02What is the case for starting on day one?
A new listing has no organic ranking — the position it holds in search results without paying — and ranking is earned mainly through sales. On day one you have none, so search sends you nobody.
Advertising is the one lever that does not require ranking: a bid puts your listing in front of a shopper however new it is. Then it compounds. Sales build ranking, ranking brings free traffic, free traffic brings more sales. Every week the flywheel is not turning is ranking your competitors gained and you did not.
The third part reshapes the disagreement: reviews mostly come from sales. Amazon sanctions two routes. The Vine program sends units to reviewers without you needing customers. The review request Amazon sends on your behalf, from an order’s detail page in Seller Central, needs an order first.
“Wait for reviews” is circular unless a sales-independent route to reviews is already running. Without one, waiting does not produce reviews. It produces delay.
03What is the case for waiting until the listing has reviews?
Clicks cost the same whether or not the listing can convert them. Ad conversion rate is ad-attributed orders divided by clicks, and it decides whether a click was worth buying.
A listing with no reviews and no star rating converts worse than the same listing with them, at the same price, for the same clicks. Shoppers use the rating as a shortcut. So this case is about waste, not patience: you buy traffic the listing cannot hold, at full price, when the same money weeks later buys more sales.
It rests on one condition: that the listing really will convert better later. If what holds it back is the price, the main image or the category, waiting changes nothing, because reviews were never the binding constraint.
04How do you decide which cost is larger?
Ask which column below describes you.
| Condition | Favours starting on day one | Favours waiting |
|---|---|---|
| Stock on hand | Covers the rate you advertise toward, plus the lead time to replace it | Fewer units than the campaign could sell before replacement arrives |
| Money at risk | A launch loss already set aside | Ad money that is also your next purchase order |
| Category competition | Crowded; nothing reaches page one unpaid | Thin; some organic sales already arrive |
| Profit per unit before advertising | Wide enough to absorb a high cost per order | Narrow; each unconverted click costs much of a unit’s profit |
| Listing readiness | Images, title and price already competitive | Still being changed week to week |
| Route to reviews | A sales-independent route already running | None started, so waiting produces no reviews |
| Launch price | Held at the price you intend to keep | Deeply discounted, so early results describe an offer you will withdraw |
Start on day one if all four hold: stock covers the lead time to replace it; the launch loss is written down and you can lose it entirely; your category gives no organic sales without ads; and the listing is finished, not still being edited. If one fails, fix it or start small. Waiting is only a plan if a sales-independent route to reviews is already running.
05What does the same budget buy at two different conversion rates?
Here is the disagreement as arithmetic: the same $300.00 spent twice on the same product at the same price, with only the ad conversion rate changing.
Before reviews, at a 3% ad conversion rate:
- Ad budget for the test$300.00
- Average CPC$1.00
- Clicks bought, $300.00 divided by $1.00300
- Ad conversion rate3%
- Ad-attributed orders, 3% of 3009
- Selling price$30.00
- Ad-attributed sales, 9 times $30.00$270.00
- ACOS, $300.00 divided by $270.00111.1%
- Profit per unit before advertising$9.00
- Profit from those orders, 9 times $9.00$81.00
- Loss on the test, $300.00 minus $81.00$219.00
After reviews, at a 9% ad conversion rate:
- Ad budget for the test$300.00
- Average CPC$1.00
- Clicks bought, $300.00 divided by $1.00300
- Ad conversion rate9%
- Ad-attributed orders, 9% of 30027
- Selling price$30.00
- Ad-attributed sales, 27 times $30.00$810.00
- ACOS, $300.00 divided by $810.0037.0%
- Profit per unit before advertising$9.00
- Profit from those orders, 27 times $9.00$243.00
- Loss on the test, $300.00 minus $243.00$57.00
The same budget buys the same 300 clicks both times. What changes is how many the listing can hold. The early run loses $219.00 and produces 9 sales; the later run loses $57.00 and produces 27 sales. The difference is $162.00 and 18 sales. Every input is illustrative, chosen so the arithmetic is checkable, not measured from a survey.
Read that difference from each side. The waiting camp sees $162.00 saved. The starting camp sees 18 sales of ranking the waiting seller never got, in the weeks when a new listing may be cheapest to rank. Both readings are correct arithmetic on the same rows. That is the honest state of this question.
06Can you start small instead of choosing?
Yes, and it is where most experienced sellers land once you press them past the slogan. Start deliberately underpowered. The purpose is not volume; it is to learn your real ad conversion rate, confirm impressions are arriving, and collect a trickle of orders.
- Pick a daily budget you would not mind losing entirely for two to three weeks, and write the total down first.
- Run one exact-match campaign on a handful of precisely relevant keywords, and one targeting competitor product pages.
- Confirm impressions are arriving. Zero impressions is not a conversion problem, and waiting does not fix it.
- Once a campaign has a few hundred clicks, calculate ad conversion rate in Campaign Manager: ad-attributed orders divided by clicks.
- Scale only after that number stops getting worse, and only if your stock can cover the higher sales rate.
Take that rate from Campaign Manager, not from unit session percentage in Seller Central Business Reports. That column divides units ordered by all sessions on your listing, organic visits included, so it answers a different question on a different denominator — and usually looks friendlier than your ads deserve.
07How do stock and launch price change the answer?
Stock first, because it can make the debate irrelevant. Advertising buys ranking, and ranking decays when a listing goes out of stock. Money spent ranking a listing that then disappears is spent twice: once to earn the position, again to earn it back.
Suppose you have 200 units and your campaigns drive 8 units a day. That is 25 days of supply. If replacing those units takes 60 days from purchase order to Amazon receiving, you will be out of stock for 35 days in the middle of the launch you just paid for.
Divide available inventory for that SKU by the daily sales rate you are advertising toward. If the result is shorter than the lead time to replace the stock, the right move is a smaller budget, not a bigger one.
Price is the second complication. Many sellers launch below the price they intend to charge later, and a lower price converts better.
Conversion data collected at a launch price does not predict conversion at the target price. When you raise the price, conversion usually falls and ACOS usually rises, though nothing about the campaigns changed. Raise price in small steps rather than one jump, and re-measure your ad conversion rate after each step.
Frequently asked
How many reviews do I need before advertising makes sense?
No threshold is published, and any specific count is somebody’s habit rather than an Amazon rule. The signal is the ad conversion rate: when clicks become orders at a rate your margin can carry, the listing is ready for more budget.
Can I speed this up with reviews from friends and family, or a free product?
No. Amazon’s Community Guidelines prohibit reviews that are compensated, incentivised, or written by people connected to the seller, and enforcement can cost you the reviews and the account. The sanctioned routes are the Vine program and the review request Amazon sends from an order in Seller Central. Vine charges an enrolment fee that rises with the number of units you enrol per parent ASIN. At the time of writing, 1 to 2 units is free, 3 to 10 units costs $75, and 11 to 30 units costs $200. The tiers differ by marketplace and have changed before, so check your own enrolment page before you budget.
If I pause advertising to save money, will my ranking fall?
Ranking follows sales, so pausing reduces the sales holding the position. A listing whose orders are almost all ad-driven has further to fall.
I have few clicks, or no impressions at all. Is that the missing reviews?
Neither is. Impressions without clicks is about what shoppers see before they reach you: main image, price beside competitors, title. No impressions usually means the wrong category node or a listing not yet indexed, and no bid fixes that.
Final thoughts
What if you apply this rule carefully and still lose money?
The likeliest reason is that the listing itself was the constraint. If the main image is weaker than the ones beside it, the price is above what the offer justifies, the category node is wrong, or the listing is not indexed, then both camps are arguing about the timing of a campaign that would have converted badly at any review count.
So before picking a side, make the listing as good as the ones you bid against, confirm it is indexed and getting impressions, and confirm your stock can survive the sales rate you are about to buy. Only then is this a timing question — and a real judgement about which cost you would rather carry, made with your own numbers.