39
3m window insulator kit
Skip itA small market ($30K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$24.56avg listing price — sweet spot $15–$100
Price range
Great$5.86–$85.97cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Returns
Okay3.1%return rate — above 5% kills the launch gate
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Growth
Okay+1.2%90-day search growth — must beat 0% to launch
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Review moat
Bad9,945.5avg incumbent reviews — the moat a new listing must climb
Conversion
Bad1.1%search→purchase rate — share of searches ending in a sale
Market size
Bad$30K$30K/yr · 111K searches