40
plug in smoke and carbon monoxide detector
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$40.87avg listing price — sweet spot $15–$100
Price range
Incredible$20.99–$67.36cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great7.0%search→purchase rate — share of searches ending in a sale
Returns
Good2.5%return rate — above 5% kills the launch gate
Market size
Okay$192K$192K/yr · 67K searches
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad7,160.35avg incumbent reviews — the moat a new listing must climb
Growth
Bad-5.2%90-day search growth — must beat 0% to launch
Brand share
Bad100%top-5 brand share — brand-locked demand