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chess notation book
Skip itBrand-locked demand (top 5 brands take 97% of clicks) — this niche doesn't clear our bar today.
Review moat
Incredible63.82avg incumbent reviews — the moat a new listing must climb
Returns
Incredible1.0%return rate — above 5% kills the launch gate
Conversion
Great7.9%search→purchase rate — share of searches ending in a sale
Avg price
Good$13.55avg listing price — sweet spot $15–$100
Price range
Okay$8.80–$18.36cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad79%top-5 click share — a locked-up shelf
Growth
Bad-22.6%90-day search growth — must beat 0% to launch
Market size
Bad$48K$48K/yr · 45K searches
Brand share
Bad97%top-5 brand share — brand-locked demand
Signals Low Review Barrier