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lego ball joints
Skip itA small market ($61K/yr) — this niche doesn't clear our bar today.
Review moat
Incredible20avg incumbent reviews — the moat a new listing must climb
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Avg price
Good$14.53avg listing price — sweet spot $15–$100
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Price range
Good$9.71–$21.00cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+10.6%90-day search growth — must beat 0% to launch
Conversion
Okay3.1%search→purchase rate — share of searches ending in a sale
Brand share
Okay84%top-5 brand share — brands hold most of the demand
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$61K$61K/yr · 136K searches