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vitamin d and magnesium
Skip itA concentrated shelf (top 5 take 74% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Avg price
Great$17.76avg listing price — sweet spot $15–$100
Price range
Great$8.97–$42.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.6%search→purchase rate — share of searches ending in a sale
Market size
Good$335K$335K/yr · 286K searches
Growth
Okay+5.0%90-day search growth — must beat 0% to launch
Brand share
Okay87%top-5 brand share — brands hold most of the demand
Review moat
Bad5,101.93avg incumbent reviews — the moat a new listing must climb
Competition
Bad74%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality