Gridwinner vs Seller Assistant
Seller Assistant works page-by-page in an extension; Gridwinner is the alternative when you'd rather process a full supplier or Keepa list in one go.
Seller Assistant is a browser-extension tool that analyzes products directly on Amazon and supplier pages, with single-product profit, restriction checks, and a sourcing side-panel.
| Gridwinner | Seller Assistant | |
|---|---|---|
| Primary job | Bulk list analysis from a file | On-page single-product analysis |
| Form factor | Web app you upload a file to | Browser extension / side-panel |
| Where data is processed | Parsed in your browser, so supplier data is never uploaded | Cloud-based |
| True landed cost (incl. VAT) | Yes: across the whole list | Per-product profit calculation |
| Best fit | Vetting wholesale / bulk lists | Manual, page-by-page sourcing |
Where Seller Assistant is strong
- On-page, single-product analysis directly on Amazon and supplier sites
- Restriction and eligibility checks while browsing
- Convenient side-panel workflow for manual sourcing
Where Gridwinner is strong
- Bulk: rank an entire list, not one product page at a time
- All processing is local; the file never reaches a Gridwinner server
- Real landed cost with VAT, and a grade on every row
Which should you choose?
Pick Seller Assistant if you source by browsing product pages and want on-page analysis and restriction checks in an extension.
Got a list to work through? Gridwinner grades every row for real profit in one local pass — no page-by-page clicking.
Frequently asked questions
- Is Gridwinner a browser extension like Seller Assistant?
- No. Gridwinner is a web app you upload a file to. Seller Assistant analyzes products on the page as you browse; Gridwinner takes a whole supplier or Keepa list and works through it at once, in the browser.