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aprilaire 413 replacement filter
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible13.5%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Market size
Great$1.7M$1.7M/yr · 139K searches
Avg price
Great$91.16avg listing price — sweet spot $15–$100
Price range
Okay$55.29–$191.87cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+3.6%90-day search growth — must beat 0% to launch
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad4,002.43avg incumbent reviews — the moat a new listing must climb
Competition
Bad94%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Signals High Price