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10th birthday shirt
Skip itA small market ($68K/yr) — this niche doesn't clear our bar today.
Review moat
Great288.97avg incumbent reviews — the moat a new listing must climb
Competition
Great36%top-5 click share — an open shelf
Avg price
Good$14.90avg listing price — sweet spot $15–$100
Brand share
Good64%top-5 brand share — brands hold most of the demand
Returns
Okay3.6%return rate — above 5% kills the launch gate
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Price range
Okay$5.82–$18.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-8.5%90-day search growth — must beat 0% to launch
Market size
Bad$68K$68K/yr · 156K searches