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iphone 8 plus battery case
Skip itA concentrated shelf (top 5 take 96% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible12.0%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.0★avg incumbent rating — lower means beatable quality
Avg price
Great$22.34avg listing price — sweet spot $15–$100
Price range
Great$10.00–$36.04cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good912.5avg incumbent reviews — the moat a new listing must climb
Returns
Okay4.1%return rate — above 5% kills the launch gate
Growth
Bad-30.7%90-day search growth — must beat 0% to launch
Brand share
Bad96%top-5 brand share — brand-locked demand
Market size
Bad$26K$26K/yr · 10K searches
Competition
Bad96%top-5 click share — a locked-up shelf