It is mainly used for quick demand validation before you source a product, enter a niche, or assess whether a competitor's sales level is worth chasing.
Yes. SellerSprite lists this as a free tool, so you can use it without relying on a paid plan just to validate the workflow.
Treat it as a first-pass directional input based on marketplace signals, not as a guarantee, and always combine it with deeper competitive research.
A practical scenario is checking several candidate ASINs or niches quickly, then deciding which ones deserve deeper validation with tracking and margin analysis.
Use the result together with the Profitability Calculator and competitor analysis so you do not chase demand that cannot produce acceptable margin.