AmzCompanion — Amazon Stock Checker for Sellers

See every Amazon seller's stock, FBA/FBM split, and price on any product page. 14-day trial — no credit card.

Know who you're really competing with — without leaving the Amazon listing. AmzCompanion is a Chrome extension for Amazon sellers who need to size up competition before they source, price, or list. It overlays live seller and inventory intelligence directly on any Amazon product page — so you get the answer in 2 seconds instead of 20 minutes of manual checking. ───────────── WHAT YOU SEE ON EVERY LISTING - Every seller on the ASIN, with their estimated stock count - FBA vs FBM vs Amazon-direct split (both as counts and percentages) - Price, condition, Prime eligibility, and delivery estimate per seller - Filters for price range, seller type, condition, and stock - The total number of offers counted and the real-stock total No CSV uploads. No dashboards. No pasting ASINs into a research tool. It's just there, on the page you're already looking at. ───────────── WHAT SELLERS USE IT FOR - Arbitrage & wholesale sellers — Spot low-stock competitors before they restock, so you can time your listing entry to capture the buy box. - Private-label sellers — Check whether any third-party sellers have piggybacked your listing and how much inventory they actually hold. - Agencies & VAs — Screen dozens of source-lead ASINs in the time it used to take to check one. - Anyone doing product research — Answer "is this listing worth entering?" from the seller distribution alone. ───────────── WHY IT'S DIFFERENT Most Amazon seller tools (Jungle Scout, Helium 10, Keepa) pull you into a separate dashboard and ask you to paste in ASINs or upload files. AmzCompanion runs inline, on the product page itself — because that's where you already are when you're making a sourcing or pricing call. It's a focused tool that does one thing well. Not a suite. Not a subscription you'll only use 10% of. ───────────── TRIAL & PRICING - Free to install. - 14-day trial of all features — no credit card required. - Paid plans from US$12/month. Solo (1 seat), Plus (2 seats), Scale (5 seats). - Cancel anytime. ───────────── WORKS ON - Every Amazon marketplace worldwide — including amazon.com, .co.uk, .com.au, .ca, .de, .fr, .it, .es, .co.jp, .in, .com.mx, .com.br, .nl, .sg, .ae, .sa, .se, .pl, and .com.tr. - Any Amazon product listing page with visible offer data. ───────────── PRIVACY AmzCompanion only reads the information on Amazon product pages it needs to calculate inventory insights. It does not: - Read your Amazon Seller Central data - Read any personal email, documents, or non-Amazon browsing - Sell or share your personal information - Track you across other sites If you have an active subscription, the extension contacts our servers to verify your license status. That's it. Full privacy policy: https://amzcompanion.com/privacy ───────────── SUPPORT Questions, feature requests, or bugs — open the extension, click Help → Contact support. Or email support@amzcompanion.com. Built by Amazon sellers, for Amazon sellers.