35
hollow blocks
Skip itA small market ($12K/yr) — this niche doesn't clear our bar today.
Review moat
Great260.1avg incumbent reviews — the moat a new listing must climb
Returns
Great1.7%return rate — above 5% kills the launch gate
Avg price
Great$97.72avg listing price — sweet spot $15–$100
Price range
Okay$29.97–$181.68cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Conversion
Bad1.8%search→purchase rate — share of searches ending in a sale
Growth
Bad-12.7%90-day search growth — must beat 0% to launch
Competition
Bad78%top-5 click share — a locked-up shelf
Market size
Bad$12K$12K/yr · 7K searches