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新コスモス電機 住宅用火災（煙式）・co警報器 快適ウォッチ sc-725t
Skip itA small market ($0/yr) — this niche doesn't clear our bar today.
Review moat
Incredible33.7avg incumbent reviews — the moat a new listing must climb
Returns
Great1.2%return rate — above 5% kills the launch gate
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Competition
Bad70%top-5 click share — a locked-up shelf
Growth
Bad-32.2%90-day search growth — must beat 0% to launch
Market size
Bad¥0¥0/yr · 8K searches
Conversion
Bad0.0%search→purchase rate — share of searches ending in a sale
Brand share
Bad100%top-5 brand share — brand-locked demand
Avg price
Bad¥9082.13avg listing price — sweet spot $15–$100
Price range
Bad¥6110.18–¥15829.98cheapest to priciest tracked listing — scored on the share inside $15–$100