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amazon mouthwash
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Incredible13.2%search→purchase rate — share of searches ending in a sale
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Market size
Okay$162K$162K/yr · 148K searches
Price range
Okay$3.74–$20.06cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+1.0%90-day search growth — must beat 0% to launch
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Avg price
Bad$8.36avg listing price — sweet spot $15–$100
Review moat
Bad9,509.58avg incumbent reviews — the moat a new listing must climb
Brand share
Bad100%top-5 brand share — brand-locked demand