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5.3 head gasket
Skip itA small market ($72K/yr) — this niche doesn't clear our bar today.
Review moat
Incredible72.53avg incumbent reviews — the moat a new listing must climb
Avg price
Great$81.24avg listing price — sweet spot $15–$100
Returns
Good2.5%return rate — above 5% kills the launch gate
Brand share
Good69%top-5 brand share — brands hold most of the demand
Conversion
Good5.0%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Okay56%top-5 click share — leaders hold, buyers still browse
Growth
Bad-5.3%90-day search growth — must beat 0% to launch
Price range
Bad$32.01–$388.29cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad$72K$72K/yr · 18K searches