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chevy 350 spark plugs
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Great$21.67avg listing price — sweet spot $15–$100
Conversion
Great9.4%search→purchase rate — share of searches ending in a sale
Returns
Good2.1%return rate — above 5% kills the launch gate
Review moat
Good788.25avg incumbent reviews — the moat a new listing must climb
Growth
Good+36.2%90-day search growth — must beat 0% to launch
Price range
Good$2.54–$30.02cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$25K$25K/yr · 12K searches
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Signals Low Review Barrier