What is the best free Amazon product research tool?

FBAlytic for profit, fee, ROI, break-even, storage, and PPC math. It does not replace keyword databases — use paid tools after margin checks.

Is Helium 10 worth it for product research?

Yes for sellers who passed free validation and need Black Box, Magnet, and competitor data before sourcing inventory.

Free calculators here. Validate demand, keywords & competition with Helium 10 before sourcing inventory.

The best stack is layered: free margin math first, then a paid suite for keywords and competitors.

Profit, ROI, break-even, storage, PPC, and BSR estimators with 2026 fee rates — no signup required.

Black Box, Xray, Magnet, Cerebro, and listing workflows — best after your shortlist passes free math.