47
cal spa filters
Skip itA small market ($19K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$34.02avg listing price — sweet spot $15–$100
Price range
Incredible$20.15–$45.38cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great226.94avg incumbent reviews — the moat a new listing must climb
Returns
Great1.3%return rate — above 5% kills the launch gate
Conversion
Good5.3%search→purchase rate — share of searches ending in a sale
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Competition
Okay65%top-5 click share — leaders hold, buyers still browse
Growth
Okay+5.9%90-day search growth — must beat 0% to launch
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$19K$19K/yr · 11K searches