Home / Compare / Amazon Arbitrage & FBA Tools
Short answer:
| Amazon Seller App | WAMP | |
|---|---|---|
| Pricing | Free (seller plan from $39.99/mo for Professional) | Free (beta); WAMP Pro coming soon |
| Free option | Yes | Yes (free for life beta) |
| Works with | Amazon | Walmart Marketplace |
| Best for | Checking eligibility and fees in-store | Walmart retail, online and wholesale arbitrage sellers |
| Strengths | + Free and official + Shows eligibility restrictions + Fee estimates | + Free during beta + Built by the SellerAmp team + Walmart-specific fees and rules |
| Weaknesses | - Limited historical data - Requires a seller account | - Walmart only - Pro features not released yet |
| Visit Amazon Seller App | Visit WAMP |
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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.
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 Amazon Seller App: free and official; for WAMP: free during beta) weighed against its main drawback (limited historical data versus walmart only).
Still undecided? See Amazon Seller App 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.