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13x21.5x1 air filter
Skip itBrand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Avg price
Incredible$41.77avg listing price — sweet spot $15–$100
Price range
Incredible$26.55–$60.18cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great7.2%search→purchase rate — share of searches ending in a sale
Growth
Good+53.2%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$86K$86K/yr · 28K searches
Competition
Bad76%top-5 click share — a locked-up shelf
Review moat
Bad14,247.44avg incumbent reviews — the moat a new listing must climb
Brand share
Bad96%top-5 brand share — brand-locked demand