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sustain me barbara o neil book
Skip itPrices mostly outside the sweet spot ($8.70–$14.26) — this niche doesn't clear our bar today.
Review moat
Incredible28.89avg incumbent reviews — the moat a new listing must climb
Returns
Great1.4%return rate — above 5% kills the launch gate
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Conversion
Good6.5%search→purchase rate — share of searches ending in a sale
Growth
Good+21.5%90-day search growth — must beat 0% to launch
Brand share
Okay77%top-5 brand share — brands hold most of the demand
Avg price
Okay£11.57avg listing price — sweet spot $15–$100
Competition
Bad77%top-5 click share — a locked-up shelf
Market size
Bad£67K£67K/yr · 90K searches
Price range
Bad£8.70–£14.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Signals Low Review Barrier