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0w30 engine oil
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Avg price
Great£22.14avg listing price — sweet spot $15–$100
Price range
Great£8.70–£40.05cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.8%search→purchase rate — share of searches ending in a sale
Review moat
Good1,340.11avg incumbent reviews — the moat a new listing must climb
Growth
Okay+11.1%90-day search growth — must beat 0% to launch
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Market size
Okay£156K£156K/yr · 121K searches
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Brand share
Bad100%top-5 brand share — brand-locked demand