Amazon FBA research in 2026 splits across three jobs: niche discovery, ASIN-level demand scoring, and ongoing rank/rating monitoring. Most sellers stitch together two dashboards plus a spreadsheet. We ranked five tools for the seller who wants one stack instead of three.
Top Pick
Scavio handles ASIN-level data and demand scoring as a script. Combine with one cheap dashboard for keyword tracking and the total cost stays under $80/mo.
Full Ranking
#1Our Pick
Scavio
Scripted FBA research, demand scoring, watchlists
Pros
- Typed JSON API
- 12 marketplaces
- Custom scoring
- Cents per query
Cons
- No keyword tracking UI
#2
Helium 10 Starter
Hands-on keyword tracking + listing optimizer
Pros
- Cerebro/Magnet
- Listing tool
Cons
- Limited Black Box at Starter
#3
Jungle Scout Basic
Sellers who live in the Chrome extension
Pros
- Chrome extension
- Sales estimator
Cons
- Limited features at Basic
#4
Keepa
Price and rank history charts
Pros
- History charts
- Cheap
Cons
- Not a niche finder
#5
AMZScout Pro
Affordable extension alternative
Pros
- Cheaper than Jungle Scout
Cons
- Smaller dataset
Side-by-Side Comparison
| Criteria | Scavio | Runner-up | 3rd Place |
|---|---|---|---|
| Entry price | $30/mo | $19/mo | $39/mo |
| API access | Yes | Yes (paid) | No |
| Niche scoring | Custom | Limited | Yes |
| Price/rank history | Daily snapshots | Yes (deep) | Limited |
| Keyword research | Via SERP | No | Cerebro/Magnet |
| Best for | Builders | Price history | Hands-on UI |
Why Scavio Wins
- Most FBA sellers cycle through three tools per product decision: a niche finder, an ASIN deep-dive, and a price-history check. Scavio collapses two of those three into one credit pool. Daily ASIN watchlist plus weekly niche scan plus product-detail batch runs all share the same $30/mo budget.
- Custom scoring formula is the highest-leverage feature for advanced sellers. Once a seller has a 50-line Python function that scores ASINs by their criteria, they stop being beholden to whatever weighting Helium 10 or Jungle Scout chose. Backtest the formula across a category, refine, deploy.
- 12 marketplaces in one credit pool matters for sellers exploring international expansion. The same script runs against UK, DE, JP, and seven others without a per-marketplace subscription. Researching whether to expand into Amazon JP becomes a 5-minute script run instead of a $99/mo trial.
- Daily watchlist runs cost cents. Tracking 50 ASINs daily for price, rank, and review count uses about 1,500 credits per month at the fast tier — well under the included 7,000. Monthly cost stays predictable even as the watchlist grows.
- The recommended stack: Scavio for scripted research and watchlists, Keepa $19/mo for deep price history, and Helium 10 Starter $39/mo for keyword tracking. Total $88/mo replaces the typical $279/mo Helium 10 Diamond plan and gives more flexibility.