Free Amazon Buy Box Checker & Featured Offer Analyzer
Score your Buy Box eligibility, estimate your Featured Offer win probability, diagnose exactly why you are losing the Buy Box, and get the exact fixes — 100% free, no signup, runs instantly in your browser.
Buy Box Eligibility & Win Score Engine
Modeled on Amazon’s official Featured Offer eligibility rules and ranking factors.
Check Any ASIN in Seconds
Paste an Amazon product link or ASIN. We scan the Buy Box across major US cities and show who owns it right now.
Please paste a valid Amazon link or 10-character ASIN (starts with B0).
Quick Check scans Buy Box ownership, price, seller and delivery for the detected marketplace. For continuous 24/7 monitoring of every city plus automated alerts, our account management service covers you.
1. Fulfillment & Seller Profile
2. Account Health Metrics
3. Offer & Inventory
Your Buy Box Score
Estimated share of Featured Offer rotations when multiple qualified sellers compete on this ASIN.
Factor-by-Factor Breakdown
| Buy Box Factor | Your Input | Amazon Benchmark | Status |
|---|
Recommended Actions to Win the Buy Box
The Definitive Guide to Winning the Amazon Buy Box
Everything you need to know about Amazon’s Featured Offer algorithm, eligibility criteria, ranking weights, and battle-tested strategies to maximize your Buy Box share in 2026.
What is the Amazon Buy Box (Featured Offer)?
The Amazon Buy Box — officially referred to by Amazon as the Featured Offer — is the white box on the right-hand side of an Amazon product detail page where shoppers can click “Add to Cart” or “Buy Now” to purchase an item with a single action.
Because over 83% of all Amazon purchases (and more than 90% on mobile devices) happen through the Buy Box, winning this placement is the single most critical factor determining an Amazon seller’s revenue. When multiple sellers offer the same ASIN, Amazon uses a proprietary, dynamic algorithm to award the Featured Offer to the seller providing the best overall customer value.
The Core Factors That Decide the Buy Box
Amazon evaluates sellers on an array of performance metrics. While Amazon never discloses the exact formula, extensive empirical testing confirms the relative weighting of the primary ranking factors:
Fulfillment Method
Very High WeightFBA (Fulfillment by Amazon) offers receive the highest preference because Amazon guarantees 1-2 day Prime shipping and handles customer support directly. Seller Fulfilled Prime (SFP) is second, followed by standard FBM.
Landed Price
Very High WeightLanded price equals item price plus shipping and handling. The lowest landed price has a massive advantage, though top-tier seller metrics and FBA can win the Buy Box at slightly higher price points.
Shipping Speed & Handling
High WeightFaster delivery times increase Buy Box share dramatically. Same-day and 1-day handling times outperform 2+ day handling. Prime-badged offers dominate standard 3–5 day ground delivery.
Order Defect Rate (ODR)
High WeightMeasures negative feedback, A-to-z Guarantee claims, and credit card chargebacks. Must stay strictly under 1.0%. Breaching 1% often causes immediate loss of Featured Offer eligibility.
Inventory Consistency
Medium WeightAmazon prefers sellers with sufficient stock depth to fulfill surging demand. Low inventory levels or frequent stock-outs penalize your Buy Box rotation percentage.
Seller Feedback & Rating
Medium WeightPositive feedback rating over the last 30, 90, and 365 days. Sellers with 98%+ positive feedback and hundreds of reviews consistently outperform low-feedback competitors.
How to Check Buy Box Eligibility in Seller Central
Before you can win the Featured Offer, your seller account and offer must be marked as Featured Offer Eligible. Follow these steps to verify your status in Amazon Seller Central:
- Log in to Amazon Seller Central.
- Navigate to Inventory → Manage All Inventory.
- Click the Preferences button in the top-right corner of the table.
- Check the box next to “Featured Offer (Buy Box) Eligible” and click Save Changes.
- Look at the column for your ASIN — if it says “Yes”, your offer qualifies for Buy Box rotation. If it says “No”, review your account metrics, fulfillment method, and pricing.
FBA vs. FBM: The Buy Box Battle
Fulfillment method is the strongest lever for winning the Buy Box. An FBA seller can frequently price 2% to 5% higher than an FBM competitor and still retain 80%+ of the Buy Box share because Amazon values guaranteed Prime delivery speeds above marginal price differences.
| Metric / Dimension | FBA (Fulfillment by Amazon) | FBM (Merchant Fulfilled) |
|---|---|---|
| Prime Badge Eligibility | Automatic on all inventory | Requires Seller Fulfilled Prime (strict) |
| Buy Box Algorithm Preference | Highest preference | Standard preference; requires lower price |
| Price Premium Tolerated | Can win at 2–5% higher price | Must typically be the lowest landed price |
| Late Shipment / Tracking Risk | 0% (handled by Amazon) | Seller bears 100% responsibility |
| Best For | Standard sized, high-velocity ASINs | Oversized, heavy, custom, or hazmat items |
Frequently Asked Questions
Common questions about the Amazon Buy Box, Featured Offer eligibility, and suppression.
Losing the Buy Box on High-Volume ASINs?
Our full-service Amazon agency monitors Buy Box health, suppresses hijacker threats, optimizes repricing strategies, and drives organic ranking for brand owners and high-volume sellers.
Speak with an Amazon Strategist