Walmart Seller Chrome Extension: Profit, Sales & Buy Box | Margenos
Chrome extension · Walmart online arbitrage

The Walmart Chrome extension for sellers

Open any product on Walmart.com and see profit, ROI, sales estimates, every competing seller and the buy box, right beside the listing.

Skip the math. Margenos shows the real profit, fees and sales estimate on every Walmart listing, right on the page.
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Right beside the listing

Open any product on Walmart.com and Margenos opens next to it: product, profit calculator, offers and charts, with no copying between tabs.

Every seller and their stock

The full offer table with fulfillment (WFS or seller-fulfilled), stock with a cumulative total, and a link to each seller's storefront.

History and buy box

Buy box price, Walmart's price, offers, reviews and rating over time, plus who usually wins the buy box.

Online arbitrage on Walmart, faster

Browsing Walmart.com for products to resell is the core of online arbitrage. The Margenos Chrome extension reads the listing you have open and shows the numbers that decide a buy, including the listing's variations (sizes, pack counts and colors) with their prices.

  • Profit calculator with Walmart referral and WFS fees
  • Sales estimates built from real Walmart signals
  • Badges Walmart shows on the listing
  • Variations with price and stock, one click to open

Safe by design

The extension reads only the Walmart pages you open yourself. It never clicks, browses, or adds anything to your cart. Sign in with the same email and password as the Margenos app.

  1. Add Margenos to Chrome and sign in.
  2. Open any product on walmart.com.
  3. Type your cost and read your profit.

What the Margenos Chrome extension shows on every Walmart listing

PanelWhat's in it
Profit calculatorSale price, referral fee by category, WFS fee by weight, your cost, profit, ROI and max buy cost
OffersEvery seller on the listing, their price, fulfillment type and stock, with a running total
Sales estimateEstimated monthly sales, shown with a range and where it came from
ChartsBuy Box price, Walmart's own price, number of offers and reviews over time
VariationsEvery size, color and pack count with its price and stock

How Walmart sellers use it

Why a Walmart-only extension

General extensions built for Amazon don't know Walmart's fee tiers, WFS rates or the fact that Walmart has no public sales rank. Margenos uses Walmart's numbers only, so the profit you see matches what Walmart actually pays out. And because the extension shares one account with the Margenos scanner app, products you check at your desk are on your phone when you're in the store.

Just getting started? Read how to sell on Walmart Marketplace.

Questions

What does the Margenos Chrome extension do?

It adds an analysis panel beside any Walmart.com product you open: profit after Walmart and WFS fees, ROI, sales estimates, every competing seller with stock, buy box history, badges and the listing's variations.

Does the extension click or buy anything?

No. It reads only the Walmart pages you open yourself and never clicks, browses or adds anything to a cart.

Is the extension included in my plan?

Yes. Every Margenos plan includes the Chrome extension and the Android app on as many devices as you like, with one shared scan allowance.

Does the Margenos extension work on Microsoft Edge?

The Margenos extension is built for Google Chrome. Many Chromium browsers can install Chrome Web Store extensions, but Chrome is the supported browser.

Do I need a Walmart seller account to use the extension?

No. You can research any Walmart.com product without connecting a Walmart seller account.

How are Walmart sales estimated without a sales rank?

Walmart doesn't publish a sales rank, so Margenos builds estimates from Walmart's own signals, such as sales badges and stock changes, and shows the estimate as a range with its source.

Know your margin before you buy.

Add Margenos to Chrome and it works on every Walmart.com listing. Start your 14-day free trial.

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