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spark plugs
Worth a lookShows a $12.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size
Incredible$12.6M$12.6M/yr · 10.3M searches
Avg price
Great$46.82avg listing price — sweet spot $15–$100
Competition
Great27%top-5 click share — an open shelf
Review moat
Good1,236.24avg incumbent reviews — the moat a new listing must climb
Brand share
Good71%top-5 brand share — brands hold most of the demand
Price range
Good$3.28–$164.27cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.9%return rate — above 5% kills the launch gate
Conversion
Okay2.6%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-12.5%90-day search growth — must beat 0% to launch