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3m water filter
Skip itBrand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Returns
Great1.5%return rate — above 5% kills the launch gate
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Review moat
Good688.56avg incumbent reviews — the moat a new listing must climb
Avg price
Good$165.57avg listing price — sweet spot $15–$100
Conversion
Okay3.0%search→purchase rate — share of searches ending in a sale
Market size
Okay$153K$153K/yr · 31K searches
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Okay+0.4%90-day search growth — must beat 0% to launch
Price range
Bad$13.55–$802.12cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad98%top-5 brand share — brand-locked demand
Signals High Price