# Stealth Seller > Product research for Amazon resellers. Everything from finding a product to buying it: run fees, profit, ROI and max cost on Amazon listings, track sellers, check retail stock and save winners into folders. Stealth Seller is a Chrome extension plus web app for online-arbitrage Amazon sellers. Main site: https://stealthseller.co. App: https://app.stealthseller.co. Help center: https://help.stealthseller.co. ## Blog - [The best online arbitrage software & tools for Amazon sellers (2026)](https://stealthseller.co/blog/best-online-arbitrage-software): What software is the best for arbitrage Amazon sellers? The ones in this page are. - [What is Amazon arbitrage? Insider secrets to finding hidden profits in 2025](https://stealthseller.co/blog/what-is-amazon-arbitrage): Amazon arbitrage is one of the most accessible ways to make money online. Learn how it works, how to start with $500-1000, and how the pros find profitable products with storefront stalking. - [Storefront Stalker Pro alternative](https://stealthseller.co/blog/storefront-stalker-pro-alternative): Compare Stealth Seller vs Storefront Stalker Pro and see how monitoring up to 600 Amazon sellers at once can find you better products faster. - [Why stalking small storefronts is great for Amazon arbitrage beginners](https://stealthseller.co/blog/stalking-small-storefronts-for-beginners): Small storefronts are ideal for Amazon arbitrage beginners, offering unique products and better profit margins. Learn how to spot opportunities, avoid common mistakes, and use the right tools to get started. - [Everything on storefront stalking as an arbitrage seller](https://stealthseller.co/blog/everything-on-storefront-stalking): Storefront stalking is a technique Amazon sellers use to find profitable products by examining other sellers' storefronts. Learn how to do it step by step, what makes a storefront worth stalking, and how to keep up with new listings. ## Product - [Chrome Extension](https://stealthseller.co/chrome-extension): The FBA profit calculator docked on every Amazon product page — fees, eligibility, offers, buy box history and eBay demand without leaving the listing - [Affiliate Program](https://stealthseller.co/affiliates): Earn 20% recurring commission on every referred subscription, for the life of the customer; free to join, powered by Rewardful - [Changelog](https://stealthseller.co/changelog): Latest product updates (most recent: The new seller view, 2026-08-11) ## Optional - [Terms of Service](https://stealthseller.co/terms) - [Privacy Policy](https://stealthseller.co/privacy)