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canon 581 ink cartridges
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible16.9%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Avg price
Incredible£30.75avg listing price — sweet spot $15–$100
Price range
Great£9.47–£65.84cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good916avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Competition
Bad72%top-5 click share — a locked-up shelf
Market size
Bad£94K£94K/yr · 18K searches
Growth
Bad-16.2%90-day search growth — must beat 0% to launch
Brand share
Bad100%top-5 brand share — brand-locked demand