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20x21.5x1 air filter
Skip itBrand-locked demand (top 5 brands take 97% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible1.0%return rate — above 5% kills the launch gate
Avg price
Incredible$45.52avg listing price — sweet spot $15–$100
Price range
Great$18.15–$108.16cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+50.9%90-day search growth — must beat 0% to launch
Conversion
Good5.7%search→purchase rate — share of searches ending in a sale
Market size
Okay$160K$160K/yr · 62K searches
Competition
Okay69%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Review moat
Bad19,322.11avg incumbent reviews — the moat a new listing must climb
Brand share
Bad97%top-5 brand share — brand-locked demand