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roomba side brush module
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Great10.9%search→purchase rate — share of searches ending in a sale
Avg price
Great$15.53avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Good$11.77–$23.49cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good781.2avg incumbent reviews — the moat a new listing must climb
Returns
Okay3.9%return rate — above 5% kills the launch gate
Growth
Bad-16.7%90-day search growth — must beat 0% to launch
Market size
Bad$5K$5K/yr · 3K searches
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand