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homekit door sensor
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$37.95avg listing price — sweet spot $15–$100
Price range
Incredible$16.46–$83.56cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.0★avg incumbent rating — lower means beatable quality
Conversion
Good6.3%search→purchase rate — share of searches ending in a sale
Market size
Okay$226K$226K/yr · 95K searches
Review moat
Okay2,247.13avg incumbent reviews — the moat a new listing must climb
Growth
Okay+0.9%90-day search growth — must beat 0% to launch
Returns
Bad5.6%return rate — above 5% kills the launch gate
Competition
Bad93%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Signals High Returns