FeeLens: FBA profit on the product page

FBA and FBM profit, margin and ROI on any Amazon.com product page from the published 2026 fee tables. Runs locally, no account.

FeeLens shows what one unit would earn you, on the Amazon.com product page you are already looking at. Open a product page and a panel appears above the buy box with the price, package weight and dimensions read from the page. Type your cost per unit and FeeLens shows the referral fee, the FBA fulfillment fee with the current surcharge, and the FBA and FBM net profit, margin and ROI. Edit the packaged weight or size if the listing is missing them, pick the referral category if the guess is wrong, and the numbers update as you type. Your inputs are remembered per product. What makes it different - The fee table carries its date. Every estimate says which published table it used and when it took effect. - Packaged weight, not item weight. Amazon bills on the outbound box; FeeLens prefers the package dimensions on the page and lets you correct them. - No account, no seller API, no bundle. One job: the profit on this unit. - A cross-check link on every estimate opens Amazon's own revenue calculator. - Everything runs in your browser. No page content, prices or browsing history is sent anywhere. Trial and price Every feature is free for 7 days after installing. After that a license key costs 9 US dollars per seat per month or 90 per year, sold by Polar as merchant of record. One key per person, any number of your own browsers. What it covers US marketplace (www.amazon.com). Referral fees by category, FBA fulfillment fees by size tier, weight and price band, the 3.5 percent fuel and logistics surcharge, FBM with the shipping you pay. Not included: holiday peak fees, storage fees, dangerous goods rates, other marketplaces. Estimates only. Amazon bills on the weight, size and price it measures at the time of sale. Check your own seller account before you buy inventory. FeeLens is an independent product of Norwell Systems LLC and is not affiliated with, endorsed by or sponsored by Amazon.com, Inc. Privacy policy: https://ext-portfolio.norwellsystems.workers.dev/privacy Support: https://ext-portfolio.norwellsystems.workers.dev/support