Online arbitrage means buying discounted products from retail websites and reselling them on Amazon. You need a sourcing engine, a deal analyser and price history.
| # | Tool | Price (checked Oct 2026) | Why it is here |
|---|---|---|---|
| 1 | SellerAmp SAS | $19.95/mo (Getting Started), $29.95, $49.95 (Going Pro) | The most popular deal analyser: profit, ROI, eligibility and Buy Box data from $19.95/mo. |
| 2 | Keepa | Free extension; data subscription €29/mo or €290/yr | Essential price and sales-rank history; data subscription €29/mo. |
| 3 | Tactical Arbitrage | Only sold in the Threecolts Seller 365 bundle, from $69/mo | Automated retailer-to-Amazon matching, now sold only inside Threecolts Seller 365 from $69/mo. |
| 4 | Jungle Scout | Starter $49/mo, Growth Accelerator $79/mo; $29-$49/mo billed yearly | Better for private label and wholesale research than pure arbitrage; Starter $49/mo. |
| 5 | WAMP | Free (beta); WAMP Pro coming soon | Selling on Walmart too? SellerAmp's WAMP extension runs the same profit and Buy Box checks for Walmart Marketplace, free during beta. |
The most popular deal analyser: profit, ROI, eligibility and Buy Box data from $19.95/mo.
SellerAmp SAS (Selling Assistant) is a browser extension and mobile app that calculates profit, ROI, eligibility, Buy Box share and alerts for any Amazon product, using your own fees and buy cost. It is the most popular deal-analysis tool among arbitrage sellers.
Pros: Fast profit and ROI calculations; Eligibility and IP alerts; Works in-store on mobile. Cons: Arbitrage-specific; Monthly subscription.
Essential price and sales-rank history; data subscription €29/mo.
Keepa tracks Amazon price and sales rank history for millions of products and displays charts right on Amazon product pages. Arbitrage sellers use it to see whether a price is stable, how often the item sells, and whether Amazon itself is on the listing.
Pros: Essential price and rank history; Free basic charts; Powerful product finder on paid plan. Cons: Steep learning curve; Advanced data requires subscription.
Automated retailer-to-Amazon matching, now sold only inside Threecolts Seller 365 from $69/mo.
Tactical Arbitrage (now part of the Threecolts Seller 365 bundle) scans retail websites and matches products to Amazon listings to find profitable price gaps automatically. It also has reverse search and wholesale manifest analysis. It is a heavy-duty tool for sellers committed to online arbitrage.
Pros: Automates online arbitrage sourcing; Wholesale list analysis; Huge retailer coverage. Cons: Expensive for beginners; Requires tuning filters.
Full Tactical Arbitrage review
Better for private label and wholesale research than pure arbitrage; Starter $49/mo.
Jungle Scout is an Amazon research suite covering product research, sales estimates, keyword research, supplier database and listing optimisation. It is aimed at sellers launching their own products or sourcing wholesale.
Pros: Comprehensive Amazon research; Accurate sales estimates; Supplier database. Cons: Overkill for casual arbitrage; Subscription cost.
Selling on Walmart too? SellerAmp's WAMP extension runs the same profit and Buy Box checks for Walmart Marketplace, free during beta.
WAMP is SellerAmp's sourcing analyser for Walmart Marketplace. A Chrome extension shows profit calculations, historic price and sales charts, Buy Box analysis and restriction badges for Walmart products, so you can check a Walmart flip the way SellerAmp checks an Amazon one.
Pros: Free during beta; Built by the SellerAmp team; Walmart-specific fees and rules. Cons: Walmart only; Pro features not released yet.
Most sellers start with SellerAmp + Keepa (about $50/mo combined) and add Seller 365 once they are consistently profitable.
Use the eligibility and IP alerts in your analyser before buying; restricted brands are the most common beginner loss.
Helium 10 dropped its Starter plan; Platinum is $99-$129/mo and focused on private label, so it is overkill for most arbitrage sellers.
Flip Profit Calculator ($12)
Spreadsheet that returns net proceeds, max buy price, ROI and a GO / COUNTER / PASS decision with fees for 10 platforms, plus a 500-row flip log and dashboard.
Marketplace Pricing Cheat Sheet ($7)
Fees for 8 resale platforms, max-buy and ROI formulas, comp check, net payout table and shipping reference on 6 printable pages.
Instant digital downloads sold via Gumroad.
Fees and prices were checked on October 17, 2026 and change often. Always confirm on the platform's own fee page.