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berkey shower filter
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Great1.3%return rate — above 5% kills the launch gate
Avg price
Great$79.71avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Good$35.48–$139.23cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good4.3%search→purchase rate — share of searches ending in a sale
Market size
Okay$117K$117K/yr · 34K searches
Growth
Bad-2.2%90-day search growth — must beat 0% to launch
Review moat
Bad14,951.4avg incumbent reviews — the moat a new listing must climb
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Signals High Price