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doulton water filter
Skip itBrand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Good723.71avg incumbent reviews — the moat a new listing must climb
Avg price
Good$141.76avg listing price — sweet spot $15–$100
Market size
Good$464K$464K/yr · 141K searches
Returns
Okay3.7%return rate — above 5% kills the launch gate
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Conversion
Okay2.3%search→purchase rate — share of searches ending in a sale
Price range
Bad$18.97–$361.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-19.7%90-day search growth — must beat 0% to launch
Brand share
Bad96%top-5 brand share — brand-locked demand
Signals High Price