45
20 inch water filter housing
Skip itA small market ($55K/yr) — this niche doesn't clear our bar today.
Review moat
Great217.31avg incumbent reviews — the moat a new listing must climb
Avg price
Great$85.65avg listing price — sweet spot $15–$100
Competition
Good41%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Good72%top-5 brand share — brands hold most of the demand
Conversion
Okay3.5%search→purchase rate — share of searches ending in a sale
Price range
Okay$37.50–$244.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-2.1%90-day search growth — must beat 0% to launch
Returns
Bad5.5%return rate — above 5% kills the launch gate
Market size
Bad$55K$55K/yr · 19K searches