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16.5 x 21.5 x1 air filter
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible15.9%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$41.02avg listing price — sweet spot $15–$100
Price range
Incredible$33.33–$54.91cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great2.0%return rate — above 5% kills the launch gate
Growth
Good+27.4%90-day search growth — must beat 0% to launch
Review moat
Okay3,366avg incumbent reviews — the moat a new listing must climb
Market size
Okay$126K$126K/yr · 19K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand