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black radiator valves
Skip itA small market ($32K/yr) — this niche doesn't clear our bar today.
Review moat
Great150.72avg incumbent reviews — the moat a new listing must climb
Conversion
Great8.5%search→purchase rate — share of searches ending in a sale
Avg price
Great£16.77avg listing price — sweet spot $15–$100
Price range
Good£7.99–£32.85cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good48%top-5 click share — leaders hold, buyers still browse
Returns
Good2.7%return rate — above 5% kills the launch gate
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-28.4%90-day search growth — must beat 0% to launch
Market size
Bad£32K£32K/yr · 22K searches