48
calcium
Skip itA small market ($7K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$21.98avg listing price — sweet spot $15–$100
Price range
Great$9.89–$35.78cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Conversion
Good5.0%search→purchase rate — share of searches ending in a sale
Growth
Okay+13.0%90-day search growth — must beat 0% to launch
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad11,306.19avg incumbent reviews — the moat a new listing must climb
Market size
Bad$7K$7K/yr · 6K searches