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diamond tester
Skip itA concentrated shelf (top 5 take 91% of clicks) — this niche doesn't clear our bar today.
Quality gap
Great4.1★avg incumbent rating — lower means beatable quality
Avg price
Great$20.17avg listing price — sweet spot $15–$100
Market size
Great$1.3M$1.3M/yr · 937K searches
Price range
Great$8.96–$37.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.7%search→purchase rate — share of searches ending in a sale
Review moat
Okay2,273.75avg incumbent reviews — the moat a new listing must climb
Returns
Bad5.8%return rate — above 5% kills the launch gate
Growth
Bad-14.2%90-day search growth — must beat 0% to launch
Brand share
Bad94%top-5 brand share — brand-locked demand
Competition
Bad91%top-5 click share — a locked-up shelf
Signals High Returns