37
20 gallon tank
Skip itWeak search conversion (0.3%) — this niche doesn't clear our bar today.
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Avg price
Good$138.13avg listing price — sweet spot $15–$100
Review moat
Good1,114.47avg incumbent reviews — the moat a new listing must climb
Returns
Okay3.2%return rate — above 6% kills the launch gate
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Growth
Okay+8.1%90-day search growth — must beat 0% to launch
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Price range
Okay$3.54–$292.75cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad$89K$89K/yr · 208K searches
Conversion
Bad0.3%search→purchase rate — share of searches ending in a sale