Helium 10

Use 'Cerebro' to reverse-engineer a competitor's top keywords by entering their ASIN. Use 'Magnet' for keyword discovery — enter a broad term and filter by Search Volume (aim for 1,000–50,000/month) and Competing Products (lower is better). 'Trendster' shows 2-year search volume history to confirm evergreen vs seasonal niches.

• 1Find a top-selling Merch design → copy its ASIN → run through Cerebro for keyword intel
• 2Magnet filter: Search Volume > 500, Competing Products < 5,000 = hidden opportunity
• 3Use Chrome Extension to see keyword data directly on Amazon search results pages
• 4Trendster: compare 2 niches side by side to see which has more consistent demand
• 5Free plan gives 2 Cerebro uses and 2 Magnet uses per day — enough for 10+ niches