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black light for fish tank
Skip itA small market ($43K/yr) — this niche doesn't clear our bar today.
Avg price
Great$17.26avg listing price — sweet spot $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Price range
Great$6.23–$44.31cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Returns
Okay4.2%return rate — above 6% kills the launch gate
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Review moat
Okay3,000.6avg incumbent reviews — the moat a new listing must climb
Growth
Bad-13.9%90-day search growth — must beat 0% to launch
Market size
Bad$43K$43K/yr · 84K searches