Gridwinner | Amazon FBA Wholesale & Arbitrage Terminal

Gridwinner is built for desktop — you're on a condensed mobile view. Open it on a computer for the full terminal.

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Fees, profit, ROI, sales estimates, scores and risk flags are automated estimates — not financial, business, or legal advice. Always verify in Amazon Seller Central before buying stock. Full disclaimer

Gridwinner is built for desktop — you're on a condensed mobile view. Open it on a computer for the full terminal.

Drop your supplier list to get started

Keepa CSV, supplier XLSX, or any spreadsheet with ASINs. Up to 100,000 rows.

Drag & drop your file here

or browse files · .csv · .xlsx · .xls · .tsv

100% local processing No upload Web Worker engine

Built for big files

100,000-row files in seconds. Processed in a background worker — your UI never freezes.

Private by default

Your supplier files are parsed locally and never uploaded — we don't store your ASINs, costs, or margins.

Smart scoring

The Alpha Score fuses rank, competition, Buy Box, saturation and velocity into one 0–100 number.

Don't have a file? Download sample CSV