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vitamin d
Skip itA small market ($18K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$19.61avg listing price — sweet spot $15–$100
Price range
Great$6.59–$39.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good4.8%search→purchase rate — share of searches ending in a sale
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Growth
Bad-11.0%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Review moat
Bad19,511.04avg incumbent reviews — the moat a new listing must climb
Market size
Bad$18K$18K/yr · 19K searches