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water filtration
Skip itPrices mostly outside the sweet spot ($13.65–$1665.62) — this niche doesn't clear our bar today.
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Brand share
Good68%top-5 brand share — brands hold most of the demand
Returns
Okay3.2%return rate — above 5% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+7.1%90-day search growth — must beat 0% to launch
Market size
Okay$157K$157K/yr · 88K searches
Avg price
Okay$330.59avg listing price — sweet spot $15–$100
Review moat
Bad5,275.56avg incumbent reviews — the moat a new listing must climb
Conversion
Bad0.5%search→purchase rate — share of searches ending in a sale
Price range
Bad$13.65–$1665.62cheapest to priciest tracked listing — scored on the share inside $15–$100