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ninja 400 exhaust
Skip itA small market ($9K/yr) — this niche doesn't clear our bar today.
Review moat
Great114.65avg incumbent reviews — the moat a new listing must climb
Avg price
Great$55.73avg listing price — sweet spot $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Price range
Great$24.82–$117.35cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+32.6%90-day search growth — must beat 0% to launch
Brand share
Okay77%top-5 brand share — brands hold most of the demand
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Conversion
Bad1.4%search→purchase rate — share of searches ending in a sale
Returns
Bad7.6%return rate — above 5% kills the launch gate
Market size
Bad$9K$9K/yr · 12K searches