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culligan ac-30 replacement filters
Skip itA concentrated shelf (top 5 take 85% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$42.45avg listing price — sweet spot $15–$100
Price range
Great$17.34–$102.74cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.1%return rate — above 5% kills the launch gate
Review moat
Good625.27avg incumbent reviews — the moat a new listing must climb
Conversion
Good5.8%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Bad$88K$88K/yr · 36K searches
Brand share
Bad91%top-5 brand share — brand-locked demand
Growth
Bad-7.6%90-day search growth — must beat 0% to launch
Competition
Bad85%top-5 click share — a locked-up shelf