Free tool
Your listing's competitors, in 30 seconds.
Paste an ASIN or an Amazon.co.jp link. See who sells on the listing, the same product on other listings, and where it stands on price against sales rank.
Two kinds of competitor
Sellers on your own listing fight for the Buy Box. The same product on other listings fights for the click in search. The snapshot shows both, separately.
Matched like a buyer would
Maker, exact product type and pack size decide a match, so a different food or another size isn't counted. It's the same matching the app uses every night.
Free, no sign-up
3 free scans every 30 days. Your results stay available in this browser for 24 hours, then they're deleted from our server.
See how it worksSample
Kitakaze Coffee Drip Bags 100ct
B0SAMPLE01 · Kitakaze Coffee
¥3,480Sales rank: 27,400 (Food & Beverage)Sellers: 3
Buy Box: Kitakaze Store · FBA
On this listing
Sellers on this same listing compete for the Buy Box.
Which one is you?
| Seller | Fulfilment | Price | vs Buy Box | Buy Box share |
|---|---|---|---|---|
| Kitakaze StoreBuy Box | FBA | ¥3,480 | 0% | 88% |
| Sample Coffee Wholesale | FBM | ¥3,620 | +4% | 12% |
| Sample Bulk Shop | FBA | no offer now | — | — |
2
Same product, other listings
3
Similar products
3
Cheaper than this listing
ⓘ
Each dot is a competitor on another listing: further left is cheaper for this listing's pack size, higher sells better (30-day sales rank). Same-product listings are larger. Filled is Amazon or FBA, hollow is FBM. Squares on this listing's own line are the other sellers on it: they share its rank, so only their price differs. Competitors in the top-left corner are cheaper and selling better. Grey hollow dots are FBM-only listings set aside while Amazon or FBA competitors are in stock.
Competitors on other listings
The same product, or a substitute, sold on another listing. They compete for the click in search.
Kitakaze Coffee Drip Bags 50ct × 2
Same productFBMB0SAMPLE02· Sellers: 2· Rank 4,500
Why it matched: Same maker (Kitakaze Coffee), product and pack size · 98% sure
¥2,980
-14%
Kitakaze Coffee Drip Bags 100ct value pack
Same productFBAB0SAMPLE03· Rank 10,900
Why it matched: Same maker (Kitakaze Coffee), product and pack size · 95% sure
¥3,590
+3%
Minami Coffee Drip Bags 100ct
SubstituteAmazonB0SAMPLE04· Rank 56,000
Why it matched: Same product and pack size, made by Minami Coffee · 96% sure
¥3,290
-5%
Shinonome Coffee Drip 100ct
SubstituteFBAB0SAMPLE05· Rank 104,000
Why it matched: Same product and pack size, made by Shinonome Coffee · 91% sure
¥2,890
-17%
Asanagi Coffee Drip Bags 100ct
SubstituteFBMB0SAMPLE06· Sellers: 3· Rank 120,000
Why it matched: Same product and pack size, made by Asanagi Coffee · 88% sure
Set aside: FBM while Amazon or FBA competitors are in stock
¥3,380
-3%
A made-up example of a result.
Questions
- Where does the data come from?
- Public Amazon.co.jp listing data (price, sales rank, sellers and Buy Box), collected through our data provider. We don't need access to your Amazon account.
- Why only 3 scans?
- Each scan searches Amazon several ways and reads every candidate, which costs us real money. The limit keeps the tool free for everyone.
- What does the app do beyond this?
- It tracks every listing you sell, flags undercuts and lost Buy Boxes, and shows what you'd keep if you matched a rival, behind your price floor.
This, for every listing, every night.
EC THUNDER tracks every rival on every listing you sell, and shows what you'd keep if you matched them.