48
alkalinity increaser for hot tub
Skip itA concentrated shelf (top 5 take 80% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible33.4%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Avg price
Great$17.30avg listing price — sweet spot $15–$100
Price range
Great$7.61–$38.57cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$500K$500K/yr · 87K searches
Review moat
Okay2,065.27avg incumbent reviews — the moat a new listing must climb
Brand share
Bad92%top-5 brand share — brand-locked demand
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-15.3%90-day search growth — must beat 0% to launch
Competition
Bad80%top-5 click share — a locked-up shelf