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magnesium
Skip itA concentrated shelf (top 5 take 82% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Avg price
Good$104.74avg listing price — sweet spot $15–$100
Price range
Good$44.10–$139.12cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$407K$407K/yr · 128K searches
Conversion
Okay3.0%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Growth
Bad-3.0%90-day search growth — must beat 0% to launch
Review moat
Bad12,149.46avg incumbent reviews — the moat a new listing must climb
Competition
Bad82%top-5 click share — a locked-up shelf
Signals High Price