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hvac filters
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.7%return rate — above 5% kills the launch gate
Market size
Incredible$2.5M$2.5M/yr · 1.2M searches
Avg price
Incredible$39.11avg listing price — sweet spot $15–$100
Price range
Incredible$21.93–$68.58cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.1%search→purchase rate — share of searches ending in a sale
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-35.5%90-day search growth — must beat 0% to launch
Review moat
Bad38,605.55avg incumbent reviews — the moat a new listing must climb
Brand share
Bad100%top-5 brand share — brand-locked demand