40
spine roller
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Great$53.59avg listing price — sweet spot $15–$100
Price range
Great$9.11–$121.53cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$744K$744K/yr · 380K searches
Conversion
Okay3.6%search→purchase rate — share of searches ending in a sale
Review moat
Okay2,144.79avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Okay4.4%return rate — above 6% kills the launch gate
Competition
Bad72%top-5 click share — a locked-up shelf
Growth
Bad-16.1%90-day search growth — must beat 0% to launch
Brand share
Bad100%top-5 brand share — brand-locked demand