30
aquarium sand
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Avg price
Great€16.77avg listing price — sweet spot $15–$100
Review moat
Good777avg incumbent reviews — the moat a new listing must climb
Price range
Good€10.37–€19.95cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay3.0%search→purchase rate — share of searches ending in a sale
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Market size
Bad€84K€84K/yr · 164K searches
Growth
Bad-32.6%90-day search growth — must beat 0% to launch
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand