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smoke detector carbon monoxide detector combo wired
Skip itBrand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Avg price
Great$93.19avg listing price — sweet spot $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Conversion
Good5.2%search→purchase rate — share of searches ending in a sale
Review moat
Good1,105.4avg incumbent reviews — the moat a new listing must climb
Returns
Good2.9%return rate — above 5% kills the launch gate
Competition
Okay63%top-5 click share — leaders hold, buyers still browse
Price range
Okay$28.87–$245.32cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad$59K$59K/yr · 12K searches
Growth
Bad-38.3%90-day search growth — must beat 0% to launch
Brand share
Bad98%top-5 brand share — brand-locked demand
Signals High Price