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radon detector
Skip itA small market ($15K/yr) — this niche doesn't clear our bar today.
Quality gap
Great4.1★avg incumbent rating — lower means beatable quality
Avg price
Great£79.60avg listing price — sweet spot $15–$100
Review moat
Good912.33avg incumbent reviews — the moat a new listing must climb
Price range
Good£14.86–£157.13cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good55%top-5 click share — leaders hold, buyers still browse
Returns
Okay3.8%return rate — above 5% kills the launch gate
Brand share
Bad93%top-5 brand share — brand-locked demand
Growth
Bad-32.6%90-day search growth — must beat 0% to launch
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
Market size
Bad£15K£15K/yr · 27K searches
Signals High Price