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shark fin antenna
Skip itHigh returns (10.4%) — this niche doesn't clear our bar today.
Quality gap
Incredible3.8★avg incumbent rating — lower means beatable quality
Price range
Good$6.57–$35.83cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good736.25avg incumbent reviews — the moat a new listing must climb
Brand share
Good66%top-5 brand share — brands hold most of the demand
Avg price
Good$13.26avg listing price — sweet spot $15–$100
Competition
Okay56%top-5 click share — leaders hold, buyers still browse
Conversion
Bad1.7%search→purchase rate — share of searches ending in a sale
Growth
Bad-10.1%90-day search growth — must beat 0% to launch
Market size
Bad$40K$40K/yr · 176K searches
Returns
Bad10.4%return rate — above 5% kills the launch gate