48
6 inch air filter
Skip itBrand-locked demand (top 5 brands take 99% of clicks) — this niche doesn't clear our bar today.
Avg price
Great$49.88avg listing price — sweet spot $15–$100
Market size
Great$1.7M$1.7M/yr · 1.2M searches
Competition
Good42%top-5 click share — leaders hold, buyers still browse
Returns
Okay3.0%return rate — above 5% kills the launch gate
Review moat
Okay2,149.31avg incumbent reviews — the moat a new listing must climb
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Price range
Okay$12.42–$249.10cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+2.1%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad99%top-5 brand share — brand-locked demand