35
sigma 18-50mm f2.8 sony
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size
Great$1.4M$1.4M/yr · 238K searches
Review moat
Great381.13avg incumbent reviews — the moat a new listing must climb
Growth
Good+28.2%90-day search growth — must beat 0% to launch
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Returns
Bad6.7%return rate — above 5% kills the launch gate
Conversion
Bad1.0%search→purchase rate — share of searches ending in a sale
Brand share
Bad100%top-5 brand share — brand-locked demand
Avg price
Bad$582.57avg listing price — sweet spot $15–$100
Price range
Bad$223.78–$664.51cheapest to priciest tracked listing — scored on the share inside $15–$100