40
air filter housing
Skip itWeak search conversion (0.4%) — this niche doesn't clear our bar today.
Review moat
Great132.24avg incumbent reviews — the moat a new listing must climb
Avg price
Great$69.05avg listing price — sweet spot $15–$100
Price range
Good$6.78–$133.67cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Brand share
Okay75%top-5 brand share — brands hold most of the demand
Returns
Okay4.0%return rate — above 5% kills the launch gate
Growth
Bad-9.5%90-day search growth — must beat 0% to launch
Market size
Bad$38K$38K/yr · 137K searches
Conversion
Bad0.4%search→purchase rate — share of searches ending in a sale