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29xl ink cartridges
Skip itBrand-locked demand (top 5 brands take 99% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible28.8%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Avg price
Great£18.14avg listing price — sweet spot $15–$100
Price range
Great£7.61–£58.63cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay2,510.94avg incumbent reviews — the moat a new listing must climb
Competition
Bad76%top-5 click share — a locked-up shelf
Growth
Bad-13.1%90-day search growth — must beat 0% to launch
Market size
Bad£65K£65K/yr · 12K searches
Brand share
Bad99%top-5 brand share — brand-locked demand