46
6 to 4 inch duct reducer
Skip itA small market ($66K/yr) — this niche doesn't clear our bar today.
Review moat
Great249.29avg incumbent reviews — the moat a new listing must climb
Conversion
Great10.1%search→purchase rate — share of searches ending in a sale
Avg price
Great$15.44avg listing price — sweet spot $15–$100
Price range
Good$8.61–$23.43cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good71%top-5 brand share — brands hold most of the demand
Growth
Good+22.9%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay70%top-5 click share — leaders hold, buyers still browse
Returns
Bad6.3%return rate — above 5% kills the launch gate
Market size
Bad$66K$66K/yr · 42K searches
Signals High Returns