Home / Compare / Amazon Arbitrage & FBA Tools
Short answer:
| Amazon Seller App | Keepa | |
|---|---|---|
| Pricing | Free (seller plan from $39.99/mo for Professional) | Free extension; data subscription €29/mo or €290/yr |
| Free option | Yes | Yes |
| Works with | Amazon | Amazon (all marketplaces) |
| Best for | Checking eligibility and fees in-store | Anyone buying or selling on Amazon |
| Strengths | + Free and official + Shows eligibility restrictions + Fee estimates | + Essential price and rank history + Free basic charts + Powerful product finder on paid plan |
| Weaknesses | - Limited historical data - Requires a seller account | - Steep learning curve - Advanced data requires subscription |
| Visit Amazon Seller App | Visit Keepa |
Amazon's own Seller app lets you scan barcodes to check whether you are allowed to sell an item, estimated fees and current offers. It is the first tool every new Amazon reseller should install.
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.
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 Amazon Seller App: free and official; for Keepa: essential price and rank history) weighed against its main drawback (limited historical data versus steep learning curve).
Still undecided? See Amazon Seller App alternatives or Keepa 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.