42
self adhesive caster wheels
Skip itA small market ($45K/yr) — this niche doesn't clear our bar today.
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Conversion
Good4.1%search→purchase rate — share of searches ending in a sale
Review moat
Good1,499.38avg incumbent reviews — the moat a new listing must climb
Returns
Okay3.3%return rate — above 5% kills the launch gate
Competition
Okay58%top-5 click share — leaders hold, buyers still browse
Brand share
Okay78%top-5 brand share — brands hold most of the demand
Growth
Okay+12.5%90-day search growth — must beat 0% to launch
Avg price
Okay$9.42avg listing price — sweet spot $15–$100
Price range
Bad$4.74–$16.83cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad$45K$45K/yr · 118K searches
Signals Low Review Barrier