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opal
Skip itA concentrated shelf (top 5 take 97% of clicks) — this niche doesn't clear our bar today.
Returns
Great1.1%return rate — above 5% kills the launch gate
Avg price
Great£17.31avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Great461avg incumbent reviews — the moat a new listing must climb
Price range
Good£4.97–£33.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-7.9%90-day search growth — must beat 0% to launch
Conversion
Bad1.0%search→purchase rate — share of searches ending in a sale
Brand share
Bad97%top-5 brand share — brand-locked demand
Market size
Bad£13K£13K/yr · 73K searches
Competition
Bad97%top-5 click share — a locked-up shelf