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power supply tester
Skip itA concentrated shelf (top 5 take 89% of clicks) — this niche doesn't clear our bar today.
Conversion
Great9.2%search→purchase rate — share of searches ending in a sale
Price range
Great$10.02–$43.10cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$17.31avg listing price — sweet spot $15–$100
Review moat
Great422.88avg incumbent reviews — the moat a new listing must climb
Returns
Okay3.5%return rate — above 5% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$127K$127K/yr · 80K searches
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Growth
Bad-13.7%90-day search growth — must beat 0% to launch
Competition
Bad89%top-5 click share — a locked-up shelf