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17.5x17.5x1 air filter
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Conversion
Incredible12.8%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$45.05avg listing price — sweet spot $15–$100
Price range
Incredible$36.43–$57.82cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+34.6%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Review moat
Bad11,171.83avg incumbent reviews — the moat a new listing must climb
Market size
Bad$60K$60K/yr · 10K searches
Competition
Bad98%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand