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purple teeth whitening powder
Skip itA concentrated shelf (top 5 take 95% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Great$16.65avg listing price — sweet spot $15–$100
Conversion
Great7.9%search→purchase rate — share of searches ending in a sale
Price range
Good$10.13–$25.04cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+21.6%90-day search growth — must beat 0% to launch
Review moat
Bad9,299.43avg incumbent reviews — the moat a new listing must climb
Market size
Bad$69K$69K/yr · 52K searches
Brand share
Bad98%top-5 brand share — brand-locked demand
Competition
Bad95%top-5 click share — a locked-up shelf
Signals Low Review Barrier