40
12 1/2 x 2 1/4 tire tube
Skip itPrices mostly outside the sweet spot ($8.07–$14.17) — this niche doesn't clear our bar today.
Conversion
Incredible19.1%search→purchase rate — share of searches ending in a sale
Returns
Good2.0%return rate — above 5% kills the launch gate
Growth
Good+56.6%90-day search growth — must beat 0% to launch
Review moat
Good956.14avg incumbent reviews — the moat a new listing must climb
Avg price
Okay$10.80avg listing price — sweet spot $15–$100
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$45K$45K/yr · 22K searches
Brand share
Bad97%top-5 brand share — brand-locked demand
Competition
Bad93%top-5 click share — a locked-up shelf
Price range
Bad$8.07–$14.17cheapest to priciest tracked listing — scored on the share inside $15–$100