18
anker 521 portable power station
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Okay$188.53avg listing price — sweet spot $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay2.5%search→purchase rate — share of searches ending in a sale
Returns
Okay5.0%return rate — above 5% kills the launch gate
Review moat
Bad5,333.33avg incumbent reviews — the moat a new listing must climb
Growth
Bad-10.3%90-day search growth — must beat 0% to launch
Market size
Bad$68K$68K/yr · 15K searches
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Price range
Bad$158.40–$227.13cheapest to priciest tracked listing — scored on the share inside $15–$100
Signals High Price