40
63.5 x 88mm card sleeves
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible13.1%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Price range
Good$3.16–$38.16cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Good$12.70avg listing price — sweet spot $15–$100
Review moat
Good1,320.33avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Competition
Bad71%top-5 click share — a locked-up shelf
Growth
Bad-8.1%90-day search growth — must beat 0% to launch
Market size
Bad$61K$61K/yr · 37K searches
Brand share
Bad100%top-5 brand share — brand-locked demand