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spark plug tester
Worth a lookShows low returns (1.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Great1.5%return rate — above 5% kills the launch gate
Avg price
Great$16.05avg listing price — sweet spot $15–$100
Conversion
Great7.3%search→purchase rate — share of searches ending in a sale
Price range
Great$5.01–$48.06cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$594K$594K/yr · 506K searches
Brand share
Good70%top-5 brand share — brands hold most of the demand
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Good1,278.15avg incumbent reviews — the moat a new listing must climb
Growth
Good+26.0%90-day search growth — must beat 0% to launch
Competition
Okay59%top-5 click share — leaders hold, buyers still browse