47
waterpik toothbrush replacement heads
Skip itSoft demand (-11.5% this quarter) — this niche doesn't clear our bar today.
Returns
Great1.7%return rate — above 5% kills the launch gate
Price range
Great$8.89–$47.25cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$17.57avg listing price — sweet spot $15–$100
Conversion
Great7.8%search→purchase rate — share of searches ending in a sale
Competition
Okay56%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay3,296.93avg incumbent reviews — the moat a new listing must climb
Market size
Okay$135K$135K/yr · 98K searches
Brand share
Okay87%top-5 brand share — brands hold most of the demand
Growth
Bad-11.5%90-day search growth — must beat 0% to launch