13 Best Chrome Extensions for Online Arbitrage

Online arbitrage runs on data, and almost all of that data now lives in your browser. When I first started doing online arbitrage, I hadn’t even downloaded Chrome on my MacBook yet. I was a Safari girl all the way. But now I use Chrome every day for my OA purchases, and I get annoyed if I find myself trying to shop efficiently from Safari. It’s just not as easy without my favorite Chrome extensions.

Quick answer: the Chrome extensions most online arbitrage sellers rely on are Keepa (price and sales rank history), an on-page profit analyzer such as RevSeller, SellerAmp SAS or Seller Assistant, a cashback extension like Rakuten, and a restriction or stock checker. Below are 13 extensions we use or recommend, with pricing re-checked in October 2026. (Amazon Assistant, which appeared in older versions of this list, was discontinued by Amazon in March 2023.)

1- Keepa – Amazon Price & Sales Rank Tracker

Cost: Free basic version with limited data; full data access costs about €29/month or €290/year (Keepa raised its prices in 2026)

Hands down, Keepa is my most used Chrome extension. I look at the data from my Keepa extension first thing every time I pull up a potential OA buy. The extension puts the Keepa graphs right on the Amazon product page, below the product title and picture, and lets me see at a glance whether Amazon is in or out of stock on an item, as well as sales rank history and price history for both Amazon as a seller and third-party sellers. I seriously get annoyed now when I pull up a product page on another browser and don’t immediately see my Keepa data. I’m completely spoiled by this extension. If you’re new to it, start with our guide on how to read a Keepa graph.

Note: Keepa’s free tier is quite limited (no interactive graphs, Product Finder or Buy Box statistics), so I highly recommend the paid subscription to get the full range of data and make the best buying decisions. Get it here.

2- RevSeller

Cost: 30-day free trial, then a single annual subscription (check RevSeller’s website for the current price)

RevSeller allows you to see crucial information directly on the Amazon product page. Once you install the RevSeller extension, you will see a box below the Amazon product title. The extension shows you the following information:

• Real-time calculator (similar to what is covered on the FBA Calculator web page)
• Sales rank and percentage (more conveniently located at the top of the product page)
• 90-day averages for price and sales rank
• Number of offers from other sellers
• Variation viewer
• One-click restriction checker
• And more

Basically, RevSeller is a time-saving tool that puts the numbers you need for a buying decision right on the Amazon page. If you want to grow your business and don’t have a lot of free time for manual research, it will definitely come in handy.

3- SellerAmp SAS

Cost: From $19.95/month (Getting Started) or $27.95/month (Getting Serious), with a 14-day free trial

SellerAmp SAS has become one of the most popular all-in-one sourcing extensions for OA sellers. Open it on an Amazon product page and you get a profit and ROI calculator, sales rank and estimated monthly sales, eligibility (restriction) alerts, IP and private label warnings, offer counts and price history in one panel. Leads you save sync to SellerAmp’s web app, which makes it easy to review buys later or share them with a VA. Read our SellerAmp review for a full breakdown, or compare the best SellerAmp alternatives.

4-Rakuten Cash Back

Cost: Free

Cashback for online shopping is one of the huge perks of doing OA. The Rakuten (formerly Ebates) extension makes it super easy to remember to get cashback on your OA purchases. When I first got started doing OA, I tried to be rebellious and just do it without all the extensions. Why, why, why? I always forgot to go through my cashback websites first, and I left money on the table by not getting a percentage back. With the Rakuten extension, when I first start my shopping session on a retail store website, I click the button at the top of the browser to activate my Rakuten account and get cashback without having to navigate to a different website first. So helpful for forgetful old me. Get it here. Comparing portals? See our guide to the best cashback websites for online arbitrage.

5- Swagbucks (SwagButton)

Cost: Free

This one works the same way as the Rakuten extension, but your cashback is paid in Swagbucks points. Some retail stores give a higher percentage back through Swagbucks than through Rakuten for the same purchase. The percentages can change from day to day, so check the information that pops up at the top of your browser window before choosing which one to activate for your purchase. Get it here.

6-Honey

Cost: Free

The Honey extension (owned by PayPal) automates applying promo codes and coupons at checkout. You could Google to find codes and enter them manually…or you could click Honey before you check out and let it test codes for you. I’ve saved plenty of money and time by letting Honey search and try codes for me. One caution for OA buyers: coupon and cashback extensions can overwrite each other’s affiliate tracking at checkout (Honey was publicly criticized for this in late 2024), so if cashback is part of your ROI, confirm your cashback portal is still tracking after a coupon extension runs. Get it here.

7- HowMany and Other Stock Checkers

Cost: Varies. Standalone stock checkers usually have a limited free version, and stock checks are built into all-in-one extensions such as Seller Assistant and SellerAmp SAS.

When it comes to researching your competition’s stock levels, the HowMany extension does just what it says — shows you how many units each seller has in stock of an inventory item. When you can see that your potential competition has only a few items in stock versus knowing that they have hundreds in stock, you know if you want to compete with them and how deep you want to go yourself on an inventory purchase. Treat any stock count as an estimate, though: sellers can set maximum order quantities that hide their true inventory, and Amazon changes its cart limits from time to time. Get it here.

8-PriceBlink

Cost: Free

Whether you’re on an Amazon product page or a retail store website, PriceBlink will attempt to find a better price on the item you’re looking at. It’s a good practice to always glance at PriceBlink and see if you could be making your OA purchase for less money at another website. Again, check to make sure the items that PriceBlink finds on another site are an exact match to what is selling on Amazon. Get it here.

9- Tactical Arbitrage and the ScoutX Extension

Cost: Sold as part of Threecolts’ Seller 365 bundle: $69/month (Standard), $129/month (Teams) or $199/month (Pro), with lower annual pricing

Many sellers search for a “Tactical Arbitrage Chrome extension”, but Tactical Arbitrage itself is a web-based tool: it scans retail store websites, matches products to Amazon listings and surfaces potential OA deals. There is no official extension called Tactical Arbitrage. The browser companion is ScoutX, which comes with a Seller 365 subscription and shows profit, fees, sales rank history and Buy Box data on Amazon and Walmart product pages. Seller 365 also bundles InventoryLab, ScoutIQ and SmartRepricer.

If you’re just getting started, learn the ropes of OA with the free extensions and build up enough sales to justify the subscription. Once you’re spending more of your sourcing budget on OA, a retail-site scanner like Tactical Arbitrage can save hours of clicking and comparing products on Amazon and retail websites.

Read our Tactical Arbitrage review for a detailed analysis of the platform, or see the best Tactical Arbitrage alternatives if the price is too steep.

10- CheckPermission and Other Restriction Checkers

Cost: Low-cost monthly subscription for standalone checkers; restriction alerts are also included in RevSeller, SellerAmp SAS and Seller Assistant

A restriction checker is a simple extension that can save you tons of time and prevent costly mistakes.

When you’re doing Retail Arbitrage and need to check restrictions, it’s easy enough to just check on the Amazon Seller App. You’re probably already checking your profit and fees there anyway, right?

But with Online Arbitrage, I find that I’m more likely to forget to check for brand and category restrictions while sourcing. And the last thing you want to do with online sourcing is ordering a ton of inventory….that you can’t even sell on Amazon!

CheckPermission is a Chrome extension that loads on Amazon product detail pages. It links to your Amazon Seller account and shows your restriction status with a simple Red or Green Box. This really streamlines your workflow and saves the step of copying/pasting the ASIN into “Add a Product” in Seller Central.

Most restriction checkers also flag hazmat (dangerous goods) items, which have their own FBA rules. If a product you want to sell is gated, our guide to getting ungated on Amazon explains how the approval process works.

We tend to talk about Keepa and CamelCamelCamel together, so it makes sense that we’d mention both extensions. Our CamelCamelCamel review explains this tool in detail.

11-The Camelizer

Cost: free

The Camelizer is free to use, but it does not show rank history.

When looking at a product on the Amazon listing page, you’d click on The Camelizer extension and get a quick overview of price history for Amazon and third-party sellers. Get it here.

You can click through to the full CamelCamelCamel site to view more information.

12- Seller Assistant App

Seller Assistant App is a popular Chrome Extension used by Amazon sellers for product analytics.  This advanced online arbitrage tool combines Amazon FBA Calculator, IP Alerts, Quick View, and Stock Checker. Such a combo equips sellers with powerful data-driven product insights and gives merchants the advantage to discover truly profitable goods to resell.

Cost: Start plan $15.99/month, Pro plan $29.99/month (adds more researched products, more Google Sheets connections and a team member), with a 14-day free trial that doesn’t require payment details.

Below you can see some useful features of Seller Assistant App.

On-page FBA & FBM calculator

Sales and Profit Estimation

Keepa Graph and Historical Data

Data Export to Google Sheets

Stock Checker

Product restrictions

IP Alert

Read our full Seller Assistant App review for more on its features.

13- RetailMeNot

Cost: Free

RetailMeNot offers coupon codes and cashback through its website and Chrome extension. When you’re on a retailer’s checkout page, the extension looks for promo codes and cashback offers you can stack on top of a sale price. As with Honey, double-check that it doesn’t replace the cashback portal you meant to use.

Which Chrome extensions do you actually need?

• Product research: Keepa plus one on-page analyzer (RevSeller, SellerAmp SAS or Seller Assistant). The analyzers overlap a lot, so most sellers only pay for one.
• Saving money on buys: one cashback extension (Rakuten or Swagbucks) and, optionally, one coupon extension.
• Finding deals at scale: a retail-site scanner like Tactical Arbitrage, or a done-for-you online arbitrage leads list if you’d rather not run scans yourself.

FAQ: Chrome extensions for online arbitrage

What is the best Chrome extension for online arbitrage?

Keepa is the one almost every OA seller uses, because price and sales rank history drive most buying decisions. Pair it with an on-page profit calculator such as RevSeller, SellerAmp SAS or Seller Assistant.

Is there a Tactical Arbitrage Chrome extension?

Not under that name. Tactical Arbitrage runs in your web browser as a web app, and its browser companion is the ScoutX extension, included with a Seller 365 subscription.

Can I do online arbitrage with only free extensions?

You can start with free tools (Keepa’s free tier, The Camelizer, Rakuten, Honey), but the free data is limited. Most sellers add a paid Keepa subscription and one analyzer once they’re buying regularly.

Does Amazon Assistant still work?

No. Amazon discontinued Amazon Assistant in March 2023. To match retail products with Amazon listings, use a sourcing tool or an analyzer extension instead.

Final thoughts

With all of these online arbitrage tools, where do you even begin? Concentrate on adding just one tool at a time while you grow your business. Practice using it well before adding another. If you can only choose one paid online arbitrage Chrome extension, start with Keepa, then add one analyzer such as RevSeller or SellerAmp SAS. Together they cover profit, sales rank, restrictions and price history, so every purchase is a lower-risk one.

Also, if you’re one of OABeans‘ subscribers, you should know that alongside our own software, we use some of these extensions (such as Keepa for checking price history) to choose our daily leads. So you don’t need to work with most of them and can rely on us for the heavy lifting.