Price & Market Tracking tools
Track Amazon prices, sales rank, Buy Box changes and competitor activity over time. Compare update frequency, historical data, alerts and marketplace coverage.
Keepa and what the paid tier adds
Keepa is the reference source for price and sales-rank history, and many sourcing tools build on its data. The free tier gives a browser extension with basic price charts. The paid Data Access subscription, €19/mo or €189 a year, adds sales rank, offer counts and Product Finder, plus basic API access; the full API starts at €49/mo. Support and documentation are minimal, and the dense charts take practice to read.
Tracking competitors rather than products
Mettra’s tracker works differently: it watches chosen competitor products and alerts on pricing, inventory and ranking changes, feeding into the same workspace as its research and financial model. It suits private-label sellers who want to monitor a handful of rivals rather than scan millions of listings. It covers Amazon only and is a younger product than Keepa.
When comparing trackers, check update frequency, how much history is retained, which marketplaces are covered, how alerts are delivered and whether data can be exported or reached by API.
Reading history without fooling yourself
- A sales-rank drop means a sale, not a volume: look at frequency across weeks, not one dip.
- Check whether Amazon itself sells on the listing before assuming the Buy Box is winnable.
- Seasonal products need at least a full year of history to judge.
- Keepa does not cover keywords or PPC; pair it with other tools for those decisions.
Common questions
Is Keepa worth paying for?
For arbitrage and wholesale sellers, almost always: €19/mo buys sales rank, offer counts and Product Finder on top of the free charts. Sellers who only glance at price history occasionally can stay on the free tier.
Does Keepa show keyword or advertising data?
No. Keepa tracks price, sales rank and offer history; keyword and PPC decisions need separate tools.