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spa heater
Skip itPrices mostly outside the sweet spot ($25.56–$1309.01) — this niche doesn't clear our bar today.
Quality gap
Incredible3.7★avg incumbent rating — lower means beatable quality
Review moat
Incredible97.62avg incumbent reviews — the moat a new listing must climb
Brand share
Good71%top-5 brand share — brands hold most of the demand
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Growth
Good+21.4%90-day search growth — must beat 0% to launch
Avg price
Okay$247.77avg listing price — sweet spot $15–$100
Market size
Okay$123K$123K/yr · 73K searches
Returns
Bad6.2%return rate — above 5% kills the launch gate
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
Price range
Bad$25.56–$1309.01cheapest to priciest tracked listing — scored on the share inside $15–$100