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aquarium filter
Worth a lookShows a $4.7M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size
Incredible$4.7M$4.7M/yr · 3.4M searches
Avg price
Incredible$30.25avg listing price — sweet spot $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Competition
Good41%top-5 click share — leaders hold, buyers still browse
Conversion
Good4.6%search→purchase rate — share of searches ending in a sale
Brand share
Good72%top-5 brand share — brands hold most of the demand
Returns
Good2.8%return rate — above 6% kills the launch gate
Price range
Okay$6.37–$211.38cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Bad8,260.34avg incumbent reviews — the moat a new listing must climb
Growth
Bad-6.2%90-day search growth — must beat 0% to launch