The short, plain answer: what Margenos does, who it's for, where it runs and who makes it.
Updated October 27, 2026 · By the Margenos team
Margenos is a Walmart reseller tool (Chrome extension and Android app) that shows whether a product is worth selling on Walmart Marketplace: fees, profit, ROI, sales estimates, every competing seller with stock, the Buy Box winner and the product's price and Buy Box history. It is made by Lemont Holdings LLC, a Texas company, and is not affiliated with Walmart.
Margenos is pronounced MAR-jin-ohs. This page explains what Margenos is, who it's for, what it shows, where it runs, and how it differs from other seller tools, so you can decide quickly if it fits how you source.
Margenos is product research software for people who sell on Walmart Marketplace. You open a Walmart.com product page in Chrome, or scan a barcode with the Android app, and Margenos shows the numbers you need before you buy inventory: what Walmart's fees will take, what you'd keep, how fast the item seems to sell, who you'd be competing with, how much stock they hold, who wins the Buy Box, and how the price has moved. It shows raw numbers. It doesn't stamp a product "safe" or "risky"; that call stays with you.
Margenos is built for Walmart Marketplace resellers, whatever way they find inventory:
It isn't a shopping coupon app, and it isn't an accounting tool. If you mainly want bookkeeping after the sale, or you sell mostly on Amazon, other tools may suit you better; our Walmart seller tools roundup covers them fairly.
| Area | What you see |
|---|---|
| Fees and profit | Walmart referral fee, WFS fees, profit, ROI, max buy cost and breakeven, with quantity, prep cost and WFS storage months |
| Demand | Sales estimates labeled with their source, shown as a floor like "430+" when less certain, or "not enough data" |
| Competition | Every competing seller with stock counts, total stock across sellers, and WFS vs seller-fulfilled for each offer |
| Buy Box | Who wins the Buy Box now, and Buy Box history |
| History | Price and Buy Box history charts from Margenos's own daily snapshots |
| Warnings and extras | Sold-out detection, variations panel, slow-seller warnings, CSV export |
| Tracking | Push alerts on tracked products when the price moves, stock runs out, or sellers or Walmart join or leave |
The top plan adds photo search (find a product without a barcode) and CartIQ, which totals profit for a whole cart of items at once.
You don't need to connect a Walmart seller account to use Margenos. That means you can research products before you apply, while your application is being reviewed, or for a category you haven't sold in yet.
Many Walmart tools are browser-only. The Margenos Android app scans a product's barcode in the store and shows the same fees, sellers, stock and history you'd see on a computer.
Walmart.com has no public sales rank and no public price history. Margenos builds its price and Buy Box history charts from its own daily snapshots of each product, so you can see whether today's price is normal. History starts when Margenos began recording that item. See how to see a Walmart product's history.
Because Walmart doesn't publish sales numbers, every sales figure on Walmart is an estimate. Margenos labels each estimate with its source, shows a floor like "430+" when it's less certain, and shows "not enough data" when it can't support a number rather than guessing. More on the Walmart sales estimator.
Margenos is a product of Lemont Holdings LLC, a Texas limited liability company that builds software and apps. For support, billing or press questions, email support@margenos.com.
Not affiliated with Walmart. Margenos is an independent tool. It is not made, endorsed or sponsored by Walmart Inc. "Walmart" and "Walmart Marketplace" are Walmart's trademarks, used here only to describe what the tool works with.
Margenos is a Walmart reseller tool (Chrome extension and Android app) that shows whether a product is worth selling on Walmart Marketplace: fees, profit, ROI, sales estimates, every competing seller with stock, the Buy Box winner and price and Buy Box history.
Margenos is made by Lemont Holdings LLC, a Texas company. You can reach the team at support@margenos.com.
No. Margenos is independent and is not made, endorsed or sponsored by Walmart Inc.
Not yet. Margenos is available as a Chrome extension and as an Android app on Google Play. The iPhone app is not out.
No. Margenos works without connecting a Walmart seller account, so you can research products before or while you apply.
Margenos starts with a 14-day free trial. Current plan prices are shown when you sign up in the extension or app.
It depends on how you source. Margenos is built specifically for Walmart Marketplace resellers, with phone barcode scanning, sellers and stock, Buy Box and price history, and profit after fees. Our Walmart seller tools roundup compares other options fairly.
Margenos shows fees, profit, sales estimates, every seller with stock, the Buy Box and price history on Walmart.com and from a barcode scan. Start your 14-day free trial.
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