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Mermaid Cup
Worth a lookShows no brand lock-in (top 5 brands take 34% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Brand share
Incredible34%top-5 brand share — no brand owns this niche
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Competition
Great21%top-5 click share — an open shelf
Avg price
Great$18.44avg listing price — sweet spot $15–$100
Growth
Good+57.8%90-day search growth — must beat 0% to launch
Price range
Good$4.94–$40.05cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay3.1%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay2,953.68avg incumbent reviews — the moat a new listing must climb
Market size
Bad$64K$64K/yr · 111K searches
Signals No Dominant Brand