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sonicare g3 replacement heads
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible15.6%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Avg price
Incredible$28.14avg listing price — sweet spot $15–$100
Price range
Great$10.40–$47.34cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$313K$313K/yr · 72K searches
Growth
Bad-2.6%90-day search growth — must beat 0% to launch
Review moat
Bad6,615avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad96%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand