46
20x30x3 air filter
Skip itBrand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Review moat
Incredible83avg incumbent reviews — the moat a new listing must climb
Conversion
Great10.7%search→purchase rate — share of searches ending in a sale
Returns
Great1.3%return rate — above 5% kills the launch gate
Avg price
Great$78.46avg listing price — sweet spot $15–$100
Price range
Great$45.52–$111.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$169K$169K/yr · 20K searches
Growth
Okay+4.0%90-day search growth — must beat 0% to launch
Competition
Bad75%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad98%top-5 brand share — brand-locked demand