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battery post shims
Skip itPrices mostly outside the sweet spot ($3.54–$9.95) — this niche doesn't clear our bar today.
Quality gap
Incredible3.9★avg incumbent rating — lower means beatable quality
Conversion
Great11.9%search→purchase rate — share of searches ending in a sale
Review moat
Great218.71avg incumbent reviews — the moat a new listing must climb
Brand share
Good63%top-5 brand share — brands hold most of the demand
Returns
Okay3.3%return rate — above 5% kills the launch gate
Competition
Okay62%top-5 click share — leaders hold, buyers still browse
Market size
Bad$91K$91K/yr · 119K searches
Growth
Bad-14.9%90-day search growth — must beat 0% to launch
Avg price
Bad$6.41avg listing price — sweet spot $15–$100
Price range
Bad$3.54–$9.95cheapest to priciest tracked listing — scored on the share inside $15–$100