iScale Merch
Amazon Merch niche research, right inside Amazon.
iScale Merch is a Chrome extension that overlays BSR (Best Seller Rank), recent-upload dates, review counts, and competition density on every product you browse on Amazon. Search a niche, and at a glance see which products have demand signal but low seller saturation — the gaps where new entrants win.
Built specifically for print-on-demand researchers — surfaces the data points that matter for POD, not the generic e-commerce metrics other tools bury.
What it surfaces
BSR right on the product card
Best Seller Rank overlaid on every Amazon search result — no clicking through to find it.
Upload date + age
See when each listing went live. Recent + low BSR = a new entrant winning fast.
Competition density
How many sellers are already serving this niche? If it's thin, that's opportunity.
Print-on-demand-specific
Every data point is chosen for POD — not bloated with retail-store metrics you don't need.