- Buy Box and Featured Offer are the same seat: older pages and pricing notifications say Buy Box, Seller Central's ranking documentation says Featured Offer. It's the offer that gets the Add to Cart / Buy Now buttons.
- Amazon documents five ranking factors: total price, delivered promise, free shipping, free returns, and seller performance (order volume and chargeback rate). A price check covers only the first.
- Total price is checked against a Competitive External Price found at other retailers outside Amazon, not just against other Amazon sellers on the same listing.
- Customer reviews and star ratings are not considered at all. The Prime badge and fulfillment method (FBA vs FBM) are equally likely to be featured when all other factors are equal, per Amazon's own documentation.
- As of September 2026, Amazon removed the seller eligibility requirement entirely. Every seller's offer is now evaluated; eligibility and actually winning are two different things.
Your Amazon Buy Box win rate moves on the five factors Amazon documents for the Featured Offer: total price, delivered promise, free shipping, free returns, and seller performance, including order volume and chargeback rate. Reviews, the Prime badge and fulfillment method aren't ranking factors. Check all five before you touch price.
A seller ops lead put the question to me: "we have Buy Box on most of our ASINs, so why is our win rate stuck at 60%, and what actually moves it?" Checking by hand starts at price, because price is the number on the dashboard, and usually stops there. That's how a chargeback-rate problem sits unfixed for months while someone adjusts a price that was never the issue.
Our agent read the landed price and shipping charge against the Competitive External Price, plus order volume and chargeback rate from seller reports, in one pass through the Selling Partner MCP. It checked them against the five-factor list Amazon Agent Atlas holds from Amazon's own documentation. On that account, price and delivery were fine. The chargeback rate was losing the offer.
Amazon documents five ranking factors, not the two most people name
Your win rate is the Featured Offer percentage in Business Reports: page views where your offer was featured, divided by all page views for your products. Amazon's ranking documentation lists five factors that move it, and the three that get the least attention are the ones a pricing dashboard doesn't show.
| Factor | What Amazon checks |
|---|---|
| Total price | Item price plus shipping, also measured against the Competitive External Price at other retailers |
| Delivered promise | Faster offers, and a specific delivery date over a wide range |
| Free shipping | A factor of its own, not folded into price |
| Free returns | A documented preference, especially in frequently returned categories like apparel |
| Seller performance | Dimensions including order volume and chargeback rate |
Atlas holds the documented list from Amazon's own pages, not the two-factor version that circulates informally. A diagnosis built on it checks all five instead of stopping where common knowledge stops.
Free shipping and free returns are their own factors, not folded into price
Amazon treats free shipping as a separate factor. A $40 offer with free shipping is preferred over a $35 offer with a $5 shipping fee: the totals match, but the all-inclusive price is more transparent to the customer.
An offer with a cart-level fee, an item-level fee or an unmet free-shipping threshold doesn't count as free shipping at all. Free returns work the same way, as a documented preference of their own, particularly in frequently returned categories like apparel.
The agent reads each offer's shipping charge through the Selling Partner MCP, so a fee that breaks free shipping shows up; return settings you confirm in Seller Central. "We offer free shipping" and "our offer qualifies as free shipping under Amazon's definition" are different claims, and only the second is a ranking factor.
Seller performance is scored on order volume and chargeback rate, not reviews
Amazon names the dimensions it evaluates. Order volume counts as one signal of reliability, and smaller sellers are deliberately not disadvantaged against larger ones. Chargeback rate counts too: fewer chargebacks improve the odds of being featured. Both come from account activity already in Seller Central.
Seller performance is not reputation. Amazon's documentation states that customer reviews and star ratings aren't considered. Prime eligibility and fulfillment method don't decide the ranking either: when all other factors are equal, offers with or without them are equally likely to be featured. A five-star rating or an FBA (Fulfillment by Amazon) badge doesn't buy position that order volume and chargeback rate didn't earn.
The agent pulls order volume and chargeback rate from seller reports through the Selling Partner MCP alongside the pricing checks, instead of treating a strong review history as a proxy.
Price is checked against outside retailers too, not just other Amazon sellers
The Competitive Price Threshold is based on prices from other retailers and explicitly excludes other Amazon sellers. The Competitive External Price is the lowest price recently found for the item, or an equivalent one, at another reputable retailer outside Amazon.
So a total price that beats every offer on the same Amazon listing can still be ineligible for the Featured Offer if it's above that external benchmark.
Eligibility opened to every seller in September 2026, and eligible isn't the same as winning
As of September 2026, Amazon no longer maintains a seller eligibility requirement: offers from all sellers are evaluated for the Featured Offer. Amazon's pages disagree on this for now: the ranking-factor FAQ says so, while Get to Know the Product Detail Page still mentions performance-based requirements to be eligible.
Eligible still isn't winning. An offer that loses on any of the five factors doesn't get featured any more than it did before. When the page shows no Featured Offer at all, that's a different problem, covered in Recover the Featured Offer Without Guessing.
Older advice still describes eligibility gates. The agent checks the current ranking factors in Atlas rather than assuming a past eligibility rejection explains today's loss.
What happens next: check all five factors on every ASIN, not just price
Amazon documents no order among the five, and one failing factor can hide a second. So the agent checks every factor on every ASIN and reports each one that fails, instead of guessing from price alone:
- Total price, against the Competitive External Price
- Delivered promise
- Free shipping, under Amazon's definition
- Free returns
- Seller performance: order volume and chargeback rate
Write that walk as your own Skill and it runs the same way on every ASIN, on a schedule, through the Amazon Agent Data layer. Connect it to Amazon Ads MCP campaign data too: a Sponsored Products click that lands on a listing you're not featured on is ad spend paying for another seller's sale.
A 60% win rate isn't a mystery once the list has five items instead of two. It's a checklist.
Next: what happens when the page shows no Featured Offer at all rather than a ranking fight, in Recover the Featured Offer Without Guessing.
Find out which of the five factors is actually costing you
Bring us your Featured Offer workflow. In a private-beta session we'll map the Selling Partner MCP read, the Atlas-grounded factor check, and a recurring Skill your team owns that flags a real gap before it costs a week of sales.
Run this workflow in betaWhat you need to run Featured Offer diagnosis
- MCP
- Amazon Selling Partner MCP for live Featured Offer percentage, pricing, and Competitive External Price reads
- Skill
- A Skill your team writes that checks all five Featured Offer factors against the live offer
- Atlas collection
- amazon_sellers, the rule corpus with the documented ranking factors and pricing eligibility rules (playbooks: Becoming the Featured Offer; Get to Know the Product Detail Page; Business reports glossary; Pricing Health)
What success and failure look like for Featured Offer diagnosis
| condition | interpretation |
|---|---|
| Featured Offer percentage below 100%, item in stock | Not a stock problem. Check all five factors: price against the Competitive External Price, delivered promise, free shipping, free returns, and seller performance. |
| Featured Offer percentage below 100%, item out of stock | Expected. Out-of-stock page views still count, and Amazon's definition says they pull the percentage below 100%. Restock before diagnosing ranking. |
| Price, shipping, and returns all competitive, still not featured | Check seller performance next: order volume and chargeback rate are both documented factors, and neither shows up in a pricing check. |
| New seller, previously ineligible | As of September 2026 every seller's offer is evaluated regardless of history. Ineligibility from a prior seller-eligibility rule no longer applies; re-check the five current ranking factors instead. |
Keep exploring Featured Offer diagnosis
Use these companion guides to understand the inputs, follow-on analysis, and adjacent workflows behind this playbook.
What to do when the offer has no Featured Offer at all: price health, stock and shipping, then competition.
FAQ
What's the difference between the Buy Box and the Featured Offer?
Same seat, two names. Older Amazon pages and the pricing notifications still call it the Buy Box: the offer that gets the Add to Cart and Buy Now buttons on a product detail page. "Featured Offer" is the current Seller Central term for the same thing, and it's the name Amazon's own ranking-factor documentation uses today.
What actually determines who wins the Featured Offer?
Amazon documents five factors: total price (item price plus shipping), delivered promise, free shipping, free returns, and seller performance, evaluated on dimensions including order volume and chargeback rate. Offers are ranked the same way for every product, with no manual overrides.
Does free shipping matter separately from price?
Yes. Amazon's documentation treats it as its own factor, not folded into total price: an offer with free shipping is preferred even against a nominally lower price that carries a shipping fee, because the all-inclusive price is more transparent to the customer.
Does my Buy Box win rate depend on other sellers on my listing, or on outside competitors too?
Both. Your total price is checked against other offers on the same listing, but also against a Competitive External Price found at other reputable retailers outside Amazon. A price that beats every other Amazon seller can still be ineligible if it's higher than what a customer could find elsewhere.
Do reviews, star ratings, or the Prime badge affect who wins the Featured Offer?
Reviews and star ratings don't: Amazon's documentation states they are not considered. Prime eligibility and fulfillment method (Amazon-fulfilled or seller-fulfilled) don't decide it either when all other factors are equal; offers with or without them are equally likely to be featured.
Why does my Featured Offer percentage fall below 100% when I hold the Buy Box?
Because every page view counts. Views where your product was out of stock, where another offer was featured, or where your product wasn't available through the Featured Offer all pull the percentage below 100%. Check stock first: a drop isn't always a ranking loss.
Is every seller eligible to compete for the Featured Offer now?
Yes. As of September 2026, Amazon removed its seller eligibility requirement; every seller's offer is evaluated. Eligibility isn't the same as winning: an eligible offer still has to compete on the five ranking factors to actually be featured.