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surfboard fins
Skip itHigh returns (5.5%) — this niche doesn't clear our bar today.
Avg price
Great$60.10avg listing price — sweet spot $15–$100
Review moat
Great420.33avg incumbent reviews — the moat a new listing must climb
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Growth
Good+34.9%90-day search growth — must beat 0% to launch
Price range
Good$12.69–$167.83cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$158K$158K/yr · 111K searches
Brand share
Okay85%top-5 brand share — brands hold most of the demand
Conversion
Okay2.4%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Returns
Bad5.5%return rate — above 5% kills the launch gate