Home / Compare / Amazon Arbitrage & FBA Tools
Short answer:
| SellerAmp SAS | WAMP | |
|---|---|---|
| Pricing | $19.95/mo (Getting Started), $29.95, $49.95 (Going Pro) | Free (beta); WAMP Pro coming soon |
| Free option | 14-day free trial | Yes (free for life beta) |
| Works with | Amazon | Walmart Marketplace |
| Best for | Online and retail arbitrage sellers analysing deals | Walmart retail, online and wholesale arbitrage sellers |
| Strengths | + Fast profit and ROI calculations + Eligibility and IP alerts + Works in-store on mobile | + Free during beta + Built by the SellerAmp team + Walmart-specific fees and rules |
| Weaknesses | - Arbitrage-specific - Monthly subscription | - Walmart only - Pro features not released yet |
| Visit SellerAmp SAS | Visit WAMP |
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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.
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.
Retail and online arbitrage on Amazon live and die by data: sales rank, price history, Buy Box competition, fees and ungating restrictions. These tools range from free browser extensions to full research suites. Beginners usually start with one scanner app plus Keepa, and add a sourcing suite once they are consistently profitable. The deciding factors usually come down to each tool's standout strength (for SellerAmp SAS: fast profit and roi calculations; for WAMP: free during beta) weighed against its main drawback (arbitrage-specific versus walmart only).
Still undecided? See SellerAmp SAS alternatives or WAMP alternatives.
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.
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Checked 2026-10-17. Confirm current pricing on each site.