Home / Compare / Amazon Arbitrage & FBA Tools
Short answer:
| Keepa | SellerAmp SAS | |
|---|---|---|
| Pricing | Free extension; data subscription €29/mo or €290/yr | $19.95/mo (Getting Started), $29.95, $49.95 (Going Pro) |
| Free option | Yes | 14-day free trial |
| Works with | Amazon (all marketplaces) | Amazon |
| Best for | Anyone buying or selling on Amazon | Online and retail arbitrage sellers analysing deals |
| Strengths | + Essential price and rank history + Free basic charts + Powerful product finder on paid plan | + Fast profit and ROI calculations + Eligibility and IP alerts + Works in-store on mobile |
| Weaknesses | - Steep learning curve - Advanced data requires subscription | - Arbitrage-specific - Monthly subscription |
| Visit Keepa | Visit SellerAmp SAS |
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.
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.
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 Keepa: essential price and rank history; for SellerAmp SAS: fast profit and roi calculations) weighed against its main drawback (steep learning curve versus arbitrage-specific).
Still undecided? See Keepa alternatives or SellerAmp SAS 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.
Checked 2026-10-17. Confirm current pricing on each site.