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vitamin d test
Worth a lookShows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Quality gap
Incredible4.0★avg incumbent rating — lower means beatable quality
Review moat
Great189.46avg incumbent reviews — the moat a new listing must climb
Avg price
Great€17.38avg listing price — sweet spot $15–$100
Price range
Great€5.49–€47.01cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.7%search→purchase rate — share of searches ending in a sale
Brand share
Good68%top-5 brand share — brands hold most of the demand
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Market size
Okay€218K€218K/yr · 187K searches
Growth
Bad-54.6%90-day search growth — must beat 0% to launch
Signals Quality Gap