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basal body temperature thermometer
Skip itPrices mostly outside the sweet spot ($4.37–$12.70) — this niche doesn't clear our bar today.
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Conversion
Great11.8%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Review moat
Okay3,876.67avg incumbent reviews — the moat a new listing must climb
Market size
Bad£88K£88K/yr · 103K searches
Avg price
Bad£7.27avg listing price — sweet spot $15–$100
Brand share
Bad94%top-5 brand share — brand-locked demand
Growth
Bad-21.8%90-day search growth — must beat 0% to launch
Competition
Bad86%top-5 click share — a locked-up shelf
Price range
Bad£4.37–£12.70cheapest to priciest tracked listing — scored on the share inside $15–$100