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20x20x3 air filter
Skip itA concentrated shelf (top 5 take 78% of clicks) — this niche doesn't clear our bar today.
Review moat
Incredible38avg incumbent reviews — the moat a new listing must climb
Price range
Incredible$38.62–$65.20cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$57.81avg listing price — sweet spot $15–$100
Conversion
Great9.7%search→purchase rate — share of searches ending in a sale
Returns
Good2.1%return rate — above 5% kills the launch gate
Growth
Okay+15.6%90-day search growth — must beat 0% to launch
Brand share
Okay85%top-5 brand share — brands hold most of the demand
Market size
Okay$105K$105K/yr · 19K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad78%top-5 click share — a locked-up shelf