I have experience in product research for an Amazon FBA Seller- Online Arbitrage business model. I do product sourcing in 3 ways: Product Search and Reverse search through Manual Sourcing, and Storefront stalking. I understand how to analyze the Keepa Graph, and the computation of Amazon fees, ROI, and Profit using RevSeller Extension, which is important in making a buying decision of products that we can sell on Amazon. Any product that I find through manual sourcing/ storefront stalking is listed in a google sheet file.