See every Amazon seller's stock, FBA/FBM split, and price on any product page. 14-day trial — no credit card.
Users
21
+4 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#152K
#127K among extensions
Version
1.12.1
updated 13 Oct 2026
Users
monthly, 8 months
Latest, 21 Oct 2026:21 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 21 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About AmzCompanion — Amazon Stock Checker for Sellers
See every seller's estimated stock on the Amazon listing you're already looking at.
Click AmzCompanion in the buy box and a panel lists every offer with its price, quantity, rating, condition and delivery date, plus the total stock and the split between FBA, FBM and Amazon.
WHAT YOU SEE ON EVERY LISTING
• Every offer on the listing, with the seller's estimated stock
• Units and share for FBA, FBM and Amazon, as counts and percentages
• Price, type, seller rating, condition and delivery date for each offer
• Sort by any column
• Filter by price range, type and condition, and the totals follow your filters
• Counts held back by Amazon's 1000+ ceiling or a seller's per-order cap are marked, so you know they're minimums
• Works on the product page and on the all-offers page
HOW SELLERS USE IT
• Arbitrage and wholesale: see how much stock the other sellers hold before you buy in.
• Private label: check whether other sellers have joined your listing and roughly how much they hold.
• Product research: see how a listing's offers split between FBA, FBM and Amazon before you commit.
WORKS ON 20 AMAZON STOREFRONTS
amazon.com, .ca, .com.mx, .com.br, .co.uk, .de, .fr, .it, .es, .nl, .se, .pl, .com.tr, .ae, .sa, .com.au, .co.jp, .in, .sg and .cn.
TRIAL AND PRICING
• Free to install
• 14-day free trial of every feature, no card needed
• Then Solo, Plus or Scale at US$12, $18 or $31 a month for 1, 2 or 5 seats. Annual billing saves 30%.
• Cancel anytime
PRIVACY
AmzCompanion works on Amazon product pages and never touches Seller Central. To count stock it uses your Amazon session in the background:
• It reads the product pages you open it on.
• To estimate a seller's stock, it adds that offer to your Amazon cart and removes what it added once the count is done.
• If your Amazon session has no delivery location yet, it sets a default postal code for that storefront so offers and delivery dates load.
• It contacts AmzCompanion's servers to activate your browser and check your plan.
• If you install after clicking one of our ads, it reads the ad-click ID our website saved and passes it to sign-up, so we can tell which ads work.
It doesn't read your Amazon password, your email or your browsing on other sites, and we don't sell your data.
Full privacy policy: https://amzcompanion.com/privacy
SUPPORT
Open the panel and click Help, then Contact support, or email support@amzcompanion.com.
https://amzcompanion.com
Built by Amazon sellers, for Amazon sellers.
https://api.amzcompanion.com/*https://amzcompanion.com/**://www.amazon.ae/**://www.amazon.com/**://www.amazon.co.uk/**://www.amazon.es/**://www.amazon.nl/**://www.amazon.mx/**://www.amazon.it/**://www.amazon.in/*and 13 more
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